Malicious PDF — malware analysis report

Static analysis result for SHA-256 f184e5b1b60579fb…

MALICIOUS

PDF

86.8 KB Created: 2021-06-30 20:26:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 67d3713d9c5d50ec3a3f0a1255c10670 SHA-1: ba3d41c5bb18e391ad887e89106709f3ae9c0111 SHA-256: f184e5b1b60579fb0b0e094c3a8964fdfe89f84df91fd347cd6b8f82b361e00c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm directing users to multiple external websites, some of which are hosted on compromised WordPress installations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure suggests a lure to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://globaltruthmediagroup.com/clients/a/aa/aa8380eac451876ae6ab993bf3a720d6/File/xenageduxoti.pdf In PDF document text
    • http://bptramptour.pl/files/file/45999158266.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b939a0d2e2a---nenedoma.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/62133959310.pdfIn PDF document text
    • http://mankatomnclassof71.com/clients/e/e0/e0e8961458839910853a12af65841b27/File/bikelidukakeneruribolo.pdfIn PDF document text
    • http://alliusie.com/userfiles/file/bajiluzabaxuki.pdfIn PDF document text
    • http://onmamtour.com/FileData/ckfinder/files/20210627_9CDCF62D339335A9.pdfIn PDF document text
    • http://harlit.com/ckfinder/userfiles/files/20210630_102650.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e3a246f3de---86309167084.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/5cfb1d660d8a9c8c826fdd58f4031ecc/ruvaxekazejepajevoduk.pdfIn PDF document text
    • http://aquamedia.cn/ckfinder/userfiles/files/28682580791.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/57313687977.pdfIn PDF document text
    • http://abwingsva.com/uploads/files/63206775671.pdfIn PDF document text
    • http://prof-cosmetics.com/upload/files/tevelifiwiwugotopipunotu.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a75ad374a0c---fobipirepolem.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1609e033f9a8f8---51276452432.pdfIn PDF document text
    • http://sciattella.net/images/file/84358316234.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/d5ac09fe1c31bd060969a6fd9f7a4f91/pegabumujotalexoja.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160a6bcaaa0b0b---40077635212.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/d9qenpcv59l8825795ro7e01tq/fosijemadaza.pdfIn PDF document text
    • http://gphs100.com/clients/e/e3/e3ed30f4e85b1ff1e74f61348c82e8eb/File/gakej.pdfIn PDF document text
    • http://bosch-service-center.ru/uploads/files/vagelemodavadarupeje.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbb8e7b43a7---45171612496.pdfIn PDF document text
    • http://ankamet.com/userfiles/file/54727096794.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=mission+impossible+fallout+full+movie+free+onlinePDF 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_off0000ee14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE14 10820 bytes
SHA-256: 5fdc489d3f80effa0a38e46894a0ab765b3e3444687a45453d3f8cce30c78234
font_01_sfnt_off000106cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CB 17724 bytes
SHA-256: ea9141ac091729dbecb7320b00b02cf441d206911e222eed663ed603a29273f4
font_02_sfnt_off0001357a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1357A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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