Malicious PDF — malware analysis report

Static analysis result for SHA-256 1785695a1e930470…

MALICIOUS

PDF

65.7 KB Created: 2021-05-09 22:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd07ea41f54706deae17ff82b6457c10 SHA-1: 92c49b185766fd21f6a690b049194f56b472d531 SHA-256: 1785695a1e93047005c8b7d246e31e20ec0b86bd51fed91823877de19acbc41f
144 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains multiple links, including one pointing to a raw IP address, that likely lead to the download of a second-stage payload. The document body is heavily obfuscated and appears to be a lure, possibly related to a size guide, to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8461

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • 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://oniceh.ru/uplcv?utm_term=calvin+klein+medium+boxers+size+guide
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6a68d0f5e---5543081360.pdf
    • https://stegopackaging.com/wp-content/plugins/super-forms/uploads/php/files/lq3edii4juv3d3jbqq0tc3jggg/45786621161.pdf
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/fa6q2fk58ro1p0u47vt3pd1bp6/ludixuni.pdf
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608e5e10e7aa9---loxesipukinuruwixogu.pdf
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/9e69a8878fcde91fd34b37a30006c156/bekafitubizefed.pdf
    • https://www.adilaltinsoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083042303806---5826687926.pdf
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160798782e0f8f---kogagaterodagubuzosuweza.pdf
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/61b0ffc58cd4a11d7175bb13211eda89/75670805958.pdf
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/e12e7558b9f2a307448eda92d300d4ce/34714701031.pdf
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/c8b4fa6b44905cae863acc02aa9725c5/muteladomatofa.pdf
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/dd113d5cf4930e5b7c269323a8da90f0/dekowikigari.pdf
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607acfd40dfae---fejijesosum.pdf
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608e5b7b5542c---jojejub.pdf
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/cadde1ab5f04ab6a3e26e7657482e33c/17364494573.pdf
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606eba8a73481---73564938343.pdf
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/1ff88762f7fad96aa00f6138faaca875/92312762564.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaf3.bin
922185f6f0d21d860f8e371a57804877b6de8c5ac5a7551b7998680a8bdf1eb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF3 5432 bytes

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