Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a6463a1699baa6…

MALICIOUS

PDF

152.8 KB Created: 2021-06-20 09:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0e015f1904cd6e3d371ff72e44f2221e SHA-1: 2aab74b273f4b1c8f0c8298989d36ef9dcf4b78c SHA-256: 30a6463a1699baa6da62bc50b0b0fe02ce77e6425226233d53ab57d439ad8ceb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9188

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://queure.ru/uplcv?utm_term=fury+captain+marvel PDF link annotation
    • http://shs1977reunion.com/clients/41590/File/xagavilodogewuku.pdfIn PDF document text
    • http://www.gabrielamaciel.net/images/content/file/bazopute.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/b57210db50c095645730ce0b7784fa8c/41962147674.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c109bdc96b0---9919816904.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607110cbea0cd---vekum.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/c6e4b2e5dc99ab3fe6c812bc34d057fe/gusezaruzosaroz.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a21437dc208---37071601193.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609760802e0c4---gaxuxoxabaliki.pdfIn PDF document text
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16086b6c023ef5---wudebuvepaza.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/7mub3i3p141b9epoqqn9k2ol6k/85957464233.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4ba428229e---pusogowonijorepipofujuro.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/9980461213.pdfIn PDF document text
    • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/523b6f03eba2f2d12202c6293c5b08ad/fakidimububuxixuriwadi.pdfIn PDF document text
    • https://noddy.nu/images/file/mebam.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/fa7fb8e9eba2f425ed7fa357d75423a5/51963767156.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074c27a753e1---9213009633.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ca8e9448ab6---82413391780.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24386 5020 bytes
SHA-256: 92a4bbf658cf0f3e124ede6ecad71907707fa94fdb6e639727ead3f9955deb86
font_01_sfnt_off0002548f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2548F 1936 bytes
SHA-256: 19d579821e83c32cd478aefcb57f849508ece8625c42f2108810477b29a00d2f

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