Malicious PDF — malware analysis report

Static analysis result for SHA-256 229a2854b13394e5…

MALICIOUS

PDF

50.6 KB Created: 2021-04-01 23:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 596a2922e3107d01dd970c79bf70d859 SHA-1: e576ac9dc570c93b48790dfbdc9ab4db6ff86375 SHA-256: 229a2854b13394e54df167636974af8350b6c6766a100fd6f22a8172fd35ca14
124 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7533

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
  • 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://resalured.ru/aws?utm_term=3+1%252F4+pulgadas+cuantos+milimetros+son PDF link annotation
    • https://cdn.sqhk.co/pipujevi/gg9Hohd/26388569634.pdfIn PDF document text
    • http://uose.xyz/how_much_does_it_cost_to_study_mba_in_malaysia5ydmw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488572/normal_5ffdcb8e8701a.pdfIn PDF document text
    • http://brosbass.com/84468625013isi75.pdfIn PDF document text
    • https://cdn.sqhk.co/silinetufid/fjdJ92v/99465524625.pdfIn PDF document text
    • https://cdn.sqhk.co/pibegufuxova/hagifei/73846526752.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421624/normal_5ff19d24e95d4.pdfIn PDF document text
    • http://lyudi23.ru/gebaboxktzg.pdfIn PDF document text
    • https://cdn.sqhk.co/mogujawogo/idihGji/26462203987.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471109/normal_604919e61d489.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403130/normal_604affca4d6ce.pdfIn PDF document text
    • https://cdn.sqhk.co/leporolino/PnA4Wgc/gymnastics_training_center_rochester_hills.pdfIn PDF document text
    • http://copytoshka.ru/18183297458nisr6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462362/normal_605a0a7511188.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/23256482265.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/ronodawepawiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/785ce872-e502-468c-8b87-67bfcb8b2850/36891921667.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/i_90_94_wisconsin_traffic_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c75796bf-b52d-4361-a9bd-16b7311f93af/once_upon_the_hill_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/daxiv.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/blue_jackets_coaching_staff.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5010239-6b8e-4174-8708-e7cc2267b0e3/nizanaramotolakemaduso.pdfIn PDF document text