Malicious PDF — malware analysis report

Static analysis result for SHA-256 417c94fd5fcd0d16…

MALICIOUS

PDF

82.6 KB Created: 2021-03-25 10:19:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 681689b4259cba17603de1f80cc462c8 SHA-1: 9782c8121278bffad62d828a78e2951a60eab0da SHA-256: 417c94fd5fcd0d16a62e690c9b10de7a1ff3a22e4622bac9c776cf1c946cd256
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading malware disguised as a movie file. No scripts were extracted, but the presence of external links and the nature of the detection suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://jumiwimov.ru/strik?utm_term=2012+end+of+the+world+full+movie+download+mp4
    • https://cdn-cms.f-static.net/uploads/4418175/normal_6047d1a0ac6ff.pdf
    • http://wamijuw.22web.org/the_art_of_living_rene_magritte.pdf
    • https://cdn-cms.f-static.net/uploads/4421767/normal_601a05909d30a.pdf
    • https://cdn-cms.f-static.net/uploads/4500887/normal_602017a62222e.pdf
    • https://cdn-cms.f-static.net/uploads/4464720/normal_602da0bcd92f9.pdf
    • https://cdn.sqhk.co/wixexozesila/jbidihf/sonic_dash_2_sonic_boom_hack_mod_apk.pdf
    • https://cdn.sqhk.co/savaketiju/a6nAjhN/87285872582.pdf
    • https://cdn.sqhk.co/beledufe/jjgh0a8/88352889453.pdf
    • http://geags.com/1b66g0
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d88cf142-2100-40aa-958f-092305e51212/85618647091.pdf
    • https://uploads.strikinglycdn.com/files/c24d9d5d-c87c-4d09-91e7-0002aa25b8b2/john_maxwell_21_irrefutable_laws_of_leadership.pdf
    • https://s3.amazonaws.com/xaliwalufoguni/zirewowil.pdf
    • https://uploads.strikinglycdn.com/files/01e55c42-e504-492c-8470-0b0e6f817421/python_dictionary_examples_for_beginners.pdf
    • https://8eefcaf3-52f5-4123-8be5-b1f0aaeea45e.filesusr.com/ugd/1d3654_45200ad007954ff3bd4c067f30302333.pdf?index=true
    • https://s3.amazonaws.com/zabevog/latitude_e6410_touchpad_driver_windows_10.pdf
    • https://4ab51db4-2ab9-4ce7-8cf9-a7235cd4f8a6.filesusr.com/ugd/c6359c_e87f66fc90e445079c56e13541482da7.pdf?index=true
    • https://s3.amazonaws.com/nawosineromigi/57752933321.pdf
    • http://gonuvatujuj.epizy.com/vubifikaburilafekanowova.pdf
    • https://de2ee6d5-caaa-4265-b15c-40100ab77d99.filesusr.com/ugd/d43733_80acfb050b624c09b268af07b4f42c32.pdf?index=true
    • http://wowimes.epizy.com/79463156243.pdf
    • https://56f9ebfc-1b58-4ccd-90b9-24793863e956.filesusr.com/ugd/0f3536_716273a0c4ab4990a2f3c2c23c22e18a.pdf?index=true
    • https://8c1dc56a-a131-4b43-acff-3635b9115217.filesusr.com/ugd/90423f_9b9843b5c58241168c734e66a50e9342.pdf?index=true
    • https://uploads.strikinglycdn.com/files/94f1960c-defe-4bc3-a4fa-be20da9911cf/how_to_repair_duraflame_heater.pdf
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001034a.bin
29efa051783591194a1842edaac0aa34e4f2ceb21bbd7157052616b8b5adb5a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1034A 5572 bytes
font_01_sfnt_off00011636.bin
716c4978e51c1168b9960acec9e63d3081b72d093054d508ed1b601609f633c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11636 11272 bytes

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