Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9fbb974d63d8b14…

MALICIOUS

PDF

81.8 KB Created: 2021-03-15 19:03:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17e2bdd0f46d7370ad08212013d2bfc0 SHA-1: 77dbeef29f43197cc6d3cba60aa478181b6a1445 SHA-256: e9fbb974d63d8b144f3346d087799867088e011ba48d89a98662330d33293f68
116 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it's a phishing lure. The document body, though heavily corrupted, suggests a maintenance manual theme, which is used to disguise the embedded URL. This URL likely leads to a phishing page or a second-stage malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 https://dafemum.ru/wix?keyword=troy-bilt+pony+maintenance+manual
    • https://cdn.sqhk.co/losegiro/jd7ierS/tiny_trainer_led_kit.pdf
    • http://nakidki-alkantara.xyz/fulalowoxibexegejozafq6w78.pdf
    • https://latejurudawiron.weebly.com/uploads/1/3/2/7/132740343/giwir-mexapuxupibebus-tizune.pdf
    • https://pudoxarunisit.weebly.com/uploads/1/3/1/1/131164251/nuzeragarorikexu.pdf
    • https://static.s123-cdn-static.com/uploads/4420608/normal_5fe10337674e4.pdf
    • http://navaram.online/turejulavemimosorisipifik7gr7.pdf
    • https://nibawomufexax.weebly.com/uploads/1/3/4/3/134371272/95f4c01dbd85.pdf
    • https://cdn-cms.f-static.net/uploads/4443821/normal_5fd631eb868c1.pdf
    • https://cdn.sqhk.co/vivakawibaki/ixgjjhw/cnc_free_designs.pdf
    • https://cdn.sqhk.co/tebefaravuz/gcghjib/wreck_it_ralph_theme_rush_tiles_magic_hopper.pdf
    • http://sun-italy.space/how_much_to_rent_a_convertible_mustangnkf2w.pdf
    • http://lnstagramcopyrightcenter.com/beat_street_music_videoorn0k.pdf
    • https://cdn.sqhk.co/bagadogod/0dmwibs/download_invasion_modern_empire_for_pc.pdf
    • http://palitra-cveta.ru/husqvarna_372xp_price_canadau0heb.pdf
    • https://zazibarem.weebly.com/uploads/1/3/0/7/130775746/1179889.pdf
    • http://rcasino.info/widipaxuviexuef.pdf
    • http://oneshops.space/didomegawz7ao.pdf
    • http://dithetsen.xyz/crackle_app_download7cq27.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off000101a1.bin
008e3cf35a827a5a82c838a9fdf8f652e95a580b176585a7c137b3df2a56a22f
pdf-font-stream PDF embedded font (sfnt) at offset 0x101A1 5124 bytes
font_01_sfnt_off000112fe.bin
753d804bd081d9f570960dcbf0ab35b8ec3e2c2ba2ec8454d5f5b4fc53e70109
pdf-font-stream PDF embedded font (sfnt) at offset 0x112FE 12160 bytes