Malicious PDF — malware analysis report

Static analysis result for SHA-256 b469f5b72436e419…

MALICIOUS

PDF

43.5 KB Created: 2021-04-03 07:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 830f2f10c6935f465ee702553a4eb469 SHA-1: 91221c58d9dcf377f7ccefab9b586b9db0b82c25 SHA-256: b469f5b72436e419cb43f403a10d8d62fa37b40d68a40d9ec51f65d5f9af9df9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.7798

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 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.
  • 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://seumenha.ru/award?keyword=adjektivdeklination+%25C3%25BCbungen+mit+l%25C3%25B6sungen+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454821/normal_603c002b71f7c.pdfIn PDF document text
    • http://bijopesenof.iblogger.org/brosur_kusen_aluminium_alexindo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_6026b4cc4a1ba.pdfIn PDF document text
    • https://kidivine.weebly.com/uploads/1/3/4/5/134576756/306f0563a0c2920.pdfIn PDF document text
    • https://fapurexetekuwud.weebly.com/uploads/1/3/4/5/134508670/4c7ae9b99f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491670/normal_5fd2e35150217.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454172/normal_5fcfb6faec7ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392867/normal_6002f07aa96a4.pdfIn PDF document text
    • http://kakupalufazire.rf.gd/vimivezolepaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/dragon_ball_z_game_free_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/2619195173.pdfIn PDF document text
    • http://nudefinarubuna.epizy.com/anne_of_green_gables_book_2.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/13283546524.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/protein_in_foods_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/the_umbrella_academy_comic_book.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/best_free_fitness_apps_for_android.pdfIn PDF document text
    • http://seposelub.rf.gd/cystex_bula.pdfIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/5853756500.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/ichak_adizes_books.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/vedasorawojadilixivazatev.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/dell_1320c_printer_ink.pdfIn PDF document text
    • http://dokajita.rf.gd/kujabonojepeje.pdfIn PDF document text