Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dfb36902895534c…

MALICIOUS

PDF

68.8 KB Created: 2021-09-29 11:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 388654a38e7be0d2da99283505de2ca2 SHA-1: a7713442c335e19d350c645a05de6966900625a1 SHA-256: 0dfb36902895534c3a5c16e767198e80a55c3574a5469d272a9d987becd24aee
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV. It employs a common phishing lure technique, presenting as an image-only document with a clickable action to disguise a link. The document body is heavily obfuscated, but heuristics indicate it functions as a link farm and potentially a callback phishing lure, directing users to various external URLs. The presence of numerous unknown URLs suggests a broad phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://sasnowosielski.com/ckfinder/userfiles/files/98010269496.pdf
    • https://fgcrubochi.com.ng/ckfinder/userfiles/files/32990377159.pdf
    • http://djpress.pl/Image/files/38808210796.pdf
    • https://svilia.restavracia02.com/userfiles/file/65128705288.pdf
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/df684e2e35980f9f13ef8adb4611ecf5/nijakukolavupabugi.pdf
    • https://ikansambel.com/contents/files/moxepewawapa.pdf
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139851cd6e6c---moridul.pdf
    • http://tsnpharma.com/upload/files/82233796730.pdf
    • https://acavacecio.it/userfiles/files/rebugigas.pdf
    • http://ohadalegistrocbarter.com/ckeditor/uploads/files/69999510087.pdf
    • https://karlholmbygg.se/UserFiles/files/dawam.pdf
    • http://tipsclubcr.com/campannas/file/87983226533.pdf
    • http://technology-mp.it/userfiles/files/55912568331.pdf
    • https://probidjp.com/ckfinder/userfiles/files/20210901_102440.pdf
    • http://capriololaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/54348384056.pdf
    • http://sissonne.hu/editor_up/benirogabana.pdf
    • http://drentmedischadvies.nl/uploads/files/xebosatubukivelunigaf.pdf
    • http://bielle-srl.com/userfiles/files/21288474854.pdf
    • http://madveras.com/ckfinder/userfiles/files/kaguduzikebofukumibote.pdf
    • http://kco.su/userfiles/file/gugitexifolegifo.pdf
    • https://latework.cz/soubory/84700677723.pdf
    • https://egokituz.org/files/galeria/files/bikezikiju.pdf
    • https://thegioibaobicarton.com/Images_upload/files/vedazazavamerev.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=junkyard+simulator+android
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b022.bin
150e6ad57694e5305bf3a8508f30b9f627adbff10c3d31ac3e6dc1083f05cb1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB022 14204 bytes
font_01_sfnt_off0000d3a2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A2 16792 bytes
font_02_sfnt_off0000ebb9.bin
621cbbdd38ececf63db024b4c0d87f4c15c9c31be9890a88e6ff4e6d206de2a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB9 10576 bytes

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