Malicious PDF — malware analysis report

Static analysis result for SHA-256 922f5465cfd40370…

MALICIOUS

PDF

65.4 KB Created: 2021-02-27 19:45:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d9f8e03fc0f44c5f7d3b9ecf84ff36e9 SHA-1: 2da9a323f3ad775c67a055dec3e1c25415652563 SHA-256: 922f5465cfd40370bd550346bf20f4f37fa34e621894014bef31c27f433f6892
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. The embedded URLs suggest a tactic to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9578

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://druttle.ru/strik?utm_term=fifty+shades+of+freed+pdf+bahasa+indonesia+free+download+iphone PDF link annotation
    • https://buxodofuluni.weebly.com/uploads/1/3/4/8/134875319/pebobununabuz.pdfIn PDF document text
    • https://wozogerodinanu.weebly.com/uploads/1/3/4/4/134498855/sudan.pdfIn PDF document text
    • https://sasurejif.weebly.com/uploads/1/3/5/9/135966776/2253381.pdfIn PDF document text
    • https://cdn.sqhk.co/pasojixaju/fJjejaT/radiant_heat_boiler.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/jgLHKtE/33916686337.pdfIn PDF document text
    • https://rusokupos.weebly.com/uploads/1/3/4/4/134468665/1506984.pdfIn PDF document text
    • https://cdn.sqhk.co/xerejijasoma/1hb8iwi/64934503695.pdfIn PDF document text
    • https://cdn.sqhk.co/fubafonu/05XjFii/call_of_duty_3_zombies_xbox_360.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/Vjdii89/making_a_lemon_pound_cake_from_scratch.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/pobuzakivararetid.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/jejjWja/emoji_balls_of_loved.pdfIn PDF document text
    • http://nesobaka9.xyz/62096716599mj6mt.pdfIn PDF document text
    • https://dumexegutotopu.weebly.com/uploads/1/3/4/3/134354144/5939ad.pdfIn PDF document text
    • https://cdn.sqhk.co/bamazaludez/jThbxOV/20285180780.pdfIn PDF document text
    • https://riwaxetonebena.weebly.com/uploads/1/3/4/3/134363930/f3d6599b976.pdfIn PDF document text
    • https://cdn.sqhk.co/dobulefipuji/jhihdxk/stickman_counter_strike_mod_apk.pdfIn PDF document text

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