Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d2e9162d2561b80…

MALICIOUS

PDF

97.8 KB Created: 2021-07-03 03:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ee93c43b9062cf29afcb87e794204120 SHA-1: 90d66d003ed38819508bfa77024f9f6c4d821b90 SHA-256: 3d2e9162d2561b80a9c8b37fe2b26a0f69a3c907e415deba7b16c0686c5c10ae
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users to potentially malicious sites. ClamAV and ML classifiers confirm its malicious nature, flagging it as a phishing trojan. The file's structure and numerous external links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://davisfolk.net/clients/1/1f/1f1070e31f35868a9a13f38ee7dc887f/File/sumuzok.pdf In PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/log9v9lbopcbqiuobcgvjvg9q5/50059477062.pdfIn PDF document text
    • http://bisenzia.it/userfiles/files/42003512158.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9c06b96d6---ginibavolibojemuxosolaf.pdfIn PDF document text
    • http://champagne-marc-chauvet.com/images/files/wonep.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b13263c1636---80506124340.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/kirijuligep.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc99c92a6f---xajonukixomabusidufa.pdfIn PDF document text
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/ca97282cb4b7b953421a5943335802c4/29507309674.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/ed3b75dc3112666c0d687b9116405d0b/xezuxumisetowavoxef.pdfIn PDF document text
    • http://xn--80aagkbrca3apkgkee0a1bi.xn--p1ai/ckfinder/userfiles/files/81857094958.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609abd6de00e7---53040935932.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d59b38992b---27641118776.pdfIn PDF document text
    • http://ibtaker.ps/userfiles/file/25445096682.pdfIn PDF document text
    • http://goldenbaycruisesagent.com/userfiles/file/futiwagakidutafi.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a93b2d5ffe0---kifekuvuziwe.pdfIn PDF document text
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/e57b65672441b8c18d1ec67c555ea98b/gizefanapozitine.pdfIn PDF document text
    • http://colafranceschi.it/userfiles/files/kiduferumipifaxiv.pdfIn PDF document text
    • http://gocep.org/data/userfiles/files/81302099877.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160847ed1c7268---vumulasuxivi.pdfIn PDF document text
    • https://anukulagrotech.com/userfiles/file/34276612222.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/8pdfg6rpog51uhlr96a98l6fbc/zefariwodew.pdfIn PDF document text
    • http://mygotour.com/FileData/ckfinder/files/20210604_6347BE27956E4781.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=smaller+and+larger+x+value+calculatorPDF 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_off00011baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BAA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000133c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133C1 10796 bytes
SHA-256: 863ab337d30d01d5a3fe4e7fff23f879994b407556e704e11592b3ec05cb7314
font_02_sfnt_off00014c73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C73 17404 bytes
SHA-256: 3ad49775ed94069ef1fd34207346d98e604352b705904b6c5b85647d2c1e7cf6

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