Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cada939e3ee0957…

MALICIOUS

PDF

79.2 KB Created: 2021-08-08 21:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 74ac0e100bcc060f9adfa1c5a396e6d0 SHA-1: f9721b61d05edf6abbbd60a2c8a5450e32606a56 SHA-256: 7cada939e3ee0957d68612d818abc63c5f674aad6226c7dd98fc34726a12309c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains a link farm with numerous URLs pointing to disposable hosting and compromised WordPress sites, suggesting an attempt to distribute further malicious content. The presence of a download button lure further supports a phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://manenshop.com/upload/files/ledipil.pdf In PDF document text
    • https://cmottaviproductive.it/uploads/file/65474141033.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/626eb6749c300b089cf34ad263c5e3d8/61957970130.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/6d74ef3ce9735e8b45be02f020896e12/90132301263.pdfIn PDF document text
    • http://canoeing.by/pics/files/93402212493.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608875a04405f---54498646330.pdfIn PDF document text
    • https://binhvi.com/upload/files/luvevitaruboxow.pdfIn PDF document text
    • http://urbanposthotel.com/admin/ckfinder/userfiles/files/13176315650.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f2ed9f45ffb---wewegamiw.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/81543655151.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec44470957---10652895471.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609ca4d9678a6---34450006901.pdfIn PDF document text
    • http://mediaworld.pro/ckfinder/userfiles/files/74280002089.pdfIn PDF document text
    • http://vietkinggroup.com/uploads/userfiles/file/8289479252.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/hv18hm3lirqklb3b9k62l44squ/maropewul.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/811494fc9ac5b9cbae7edd61b9c23a3a/bokizokiziveporuvumomi.pdfIn PDF document text
    • http://cokhihoangvinh.com/uploads/userfiles/file/ragutizojoso.pdfIn PDF document text
    • https://marathonblainville.com/userfiles/files/setubejadopakujolopizum.pdfIn PDF document text
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/3e9601a9c7eb09b70777bec462b990f4/jemolukofezemupadi.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ec6183642---duvurutetizuduxaluvutul.pdfIn PDF document text
    • http://datavincity.com/uploads/ckfinder/files/wetijuzutowulabumen.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/biwidutelanitanodaw.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/na716qo675sro5ckhlpgm6bio0/zugepusuwi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=fichas+matematicas+6+primaria+santillana+pdfPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF7 10912 bytes
SHA-256: 95908a127718d98533f43a5b7fef37904fc68c657ce89c3e6f7a9fa1cdc8c967
font_01_sfnt_off0000e8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FC 17280 bytes
SHA-256: 7921e5e2b2f8ff9bfc454b3bc9ac5b854027de4d50095ee6d652d70abb5d3a30
font_02_sfnt_off000114a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114A0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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