Malicious PDF — malware analysis report

Static analysis result for SHA-256 97bf389534730a6e…

MALICIOUS

PDF

97.5 KB Created: 2021-06-30 11:30:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 5f0b28afc63ea1c4d5f1990cd7d9527e SHA-1: 041269c486aaadf9df461ddcc775c45bb3c47ad2 SHA-256: 97bf389534730a6e3c199662f4faa52fa883369b403a88e725cb98e282291012
256 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a phishing lure, specifically requesting sensitive recovery secrets or private keys from the user. It also contains numerous links to external sites, many of which host PDF files, suggesting a link farm designed to obscure the true destination. The presence of ClamAV detection and ML flagging further supports its malicious nature, likely as a precursor to credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9733

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/drvscbuj027ogebpe849bon3tv/11576596392.pdf In PDF document text
    • http://wskinbody.com/data/boardData/files/60957483668.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc46424b9d---pibaribim.pdfIn PDF document text
    • http://jkmdc.com/aversystem.com/userfiles/file/26349576116.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0aa95f286---41024817094.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160da3767cedd4---52627945859.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/2764b45f275064ea1c7ebd73e0b42d85/47504626592.pdfIn PDF document text
    • https://wegofa.com/userfiles/file/pivajabilusoxofoguv.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/186c14557c1f32ba30114d3c79c6b8ad/tidipomosinuwibevodinuz.pdfIn PDF document text
    • https://asoriofrio.org/ckfinder/userfiles/files/gojikafo.pdfIn PDF document text
    • https://paardenwelzijnscheck.nl/app/webroot/files/ckeditor_files/files/78944874761.pdfIn PDF document text
    • http://allnatureint.com/userfiles/file/nudexela.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1607f493b25a06---bolufadigekokaputapim.pdfIn PDF document text
    • http://email-database.info/userfiles/file/85190823386.pdfIn PDF document text
    • http://irishheritagesociety.net/clients/7/7f/7f3653e4c5d791bf76f28d2bf9929747/File/87132852299.pdfIn PDF document text
    • http://lifecare4all.com/upload/files/72483882736.pdfIn PDF document text
    • http://amirafouad.com/uploaded_files/file/miluraxafo.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608f579bea1a9---rasevotinajagamugebulo.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20210522092144.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/dsp9d94op71skdndr9vrl77pu1/49178088341.pdfIn PDF document text
    • http://cnkls.com/userfiles/file/1623781358.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd2d8d0cf5---viburobigizimabiromek.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609a9bc1a7387---pafaxetofatuzofof.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/56d90b49882e81fb4b77a37f4a9d356d/zewunamodojamesazupul.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dc06e5cc047---basirolovulito.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c751ecb666---87414087420.pdfIn PDF document text
    • https:///FederationMetadata/2007-06/FederationMetadata.xmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=adfs+spring+bootPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A3 10456 bytes
SHA-256: e5d9e2a6cac629d4c2f8cb42e854a90121021bb823204c8215d0ad550cf27ef6
font_01_sfnt_off000119fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119FE 18220 bytes
SHA-256: 81b82f9b02c06e8729e66295ac42a64afb31b18d57211de875d758aa50c38b96
font_02_sfnt_off00014a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A63 16344 bytes
SHA-256: 5cd8a120e106fc2d4fc1855603a636a3ce922decfb1b4d98f17a4a5450337c58
font_03_sfnt_off0001605c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1605C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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