Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb31b213955e7b55…

MALICIOUS

PDF

57.9 KB Created: 2021-05-01 00:55:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d89fc551fbc4d6dbd5fb4f77f31ccb76 SHA-1: e85376802acfd173564d6082739878993f67a096 SHA-256: eb31b213955e7b5506f150c898decad4e51e29d92204e2765e8d397d7015c204
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to a 'free pdf download'. The ML classifier and ClamAV detection further support the malicious nature of this file. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9085

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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/strik?utm_term=how+to+make+your+first+million+warren+ingram+free+pdf+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_6069736ceb11f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387219/normal_5ff78f7898244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456728/normal_601853be972fd.pdfIn PDF document text
    • http://gutagige.sportsontheweb.net/netgear_jgs524v2_price.pdfIn PDF document text
    • http://zumewidife.mygamesonline.org/delegation_in_nursing_management.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391037/normal_5fe59c19f1579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454430/normal_6034dedc291a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385415/normal_5febe13822421.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501634/normal_600594bd1a37d.pdfIn PDF document text
    • https://bifukumuvu.weebly.com/uploads/1/3/5/3/135347201/vijimobalene-vukevizif.pdfIn PDF document text
    • https://wajevubal.weebly.com/uploads/1/3/4/6/134687537/fafetuvebono.pdfIn PDF document text
    • https://rezemofojo.weebly.com/uploads/1/3/5/3/135321986/dulibuxabo.pdfIn PDF document text
    • http://wefigofozotime.22web.org/count_zeros_in_np_array.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387811/normal_602a3f876e8f2.pdfIn PDF document text
    • http://napowojeba.medianewsonline.com/cowboy_ethics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381541/normal_606379a2c8b27.pdfIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/rifixiga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c3aec30-4307-477c-ab54-28ad48685671/32960434523.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66cdfd77-4a74-4855-9d65-435926c0e87a/51508388089.pdfIn PDF document text
    • http://kaborox.rf.gd/podepixowega.pdfIn PDF document text
    • http://fuxunowelujuxa.atwebpages.com/tageliwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e14e56ad-a3b4-4cfa-b4c5-164f22b4bb27/27086281965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47cccf2c-c97a-4e4a-ac28-36811973cd8b/how_to_troubleshoot_bosch_washing_machine.pdfIn PDF document text

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