Malicious PDF — malware analysis report

Static analysis result for SHA-256 3074e6aa25e9ab13…

MALICIOUS

PDF

90.3 KB Created: 2021-08-11 02:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: a332a13519fc5b02d312419c56b0f2d2 SHA-1: 493818d0ef77b66740178ddf6b6cf74e8cb721d9 SHA-256: 3074e6aa25e9ab1302db588296c099c6974a810f31a6a0eb79a8c7aa7f08668a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for malicious content or phishing lures. The presence of external URIs and the compromised CMS upload links strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • 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://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/62cc4c5a39b0989fe9266d5b71a1d4cb/68848201716.pdf In PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/21003235d3573ad18b33951a863c28dc/83206402985.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/81f0cc5e782ab62356e78cc439cc5d9b/zezazojesu.pdfIn PDF document text
    • https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/e3f4224585e75ab14bb2a2986ef25ba7/55369375381.pdfIn PDF document text
    • https://securitegenerale.tn/userfiles/file/bafisovavuwekoxazevalogus.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b3e9360d87e---lufofaruxilotofot.pdfIn PDF document text
    • http://chalappuram.com/userfiles/file/93654672742.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf63a1a621---zuropuxobuwibug.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/27396225b31c7af7cec4ea5ba0f7c8c1/91478607834.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbc0212534---ragomoxawofujo.pdfIn PDF document text
    • http://clubesquilacoma.com/uploads/files/patebek.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/bth5g86dd2eufts9rl06810dv0/pusamirizusapilinevuwa.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab9e1ae5287---37075301147.pdfIn PDF document text
    • http://rydelko.pl/userfiles/file/livaxovotifibon.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f050e4e17f---bajijogawufagos.pdfIn PDF document text
    • https://houstoncoinshow.org/FCKeditor/file/fupidoz.pdfIn PDF document text
    • http://aifamilyreunion.com/clients/59202/File/tidogolaleninaxisi.pdfIn PDF document text
    • http://kpotplace.com/uploads/files/nazatefikefonisijabitusef.pdfIn PDF document text
    • http://kargo-box.com/uploads/files/12509911716.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/cvhi5e8go6v917pvd4rnilvhv6/bewofunin.pdfIn PDF document text
    • http://jamesirvinewedding.com/clients/f/f9/f947a18657f5d77a8fcd192ffd4ccf25/File/18238973797.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b0429a61c---78891279733.pdfIn PDF document text
    • http://anoh.net/pds/userfiles/files/voxapomegelirobatoda.pdfIn PDF document text
    • http://best-infosystems.com/userfiles/file/tekub.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=how+to+adjust+a+edelbrock+carbPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000116b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B7 16820 bytes
SHA-256: 5be1840398e8532f765420c30954569a002052dbbd04860fc358c8917ce2ee35
font_02_sfnt_off0001425e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1425E 10704 bytes
SHA-256: 13f9ef1fe9da25d22c9afe8566da28966513758a26977b5b97a48fb6e9433243

Open this report in the interactive analyzer, or submit your own file for analysis.