Malicious PDF — malware analysis report

Static analysis result for SHA-256 028e7fca42fc67b2…

MALICIOUS

PDF

53.1 KB Created: 2021-03-25 16:14:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cebd89f82c4a9edb1957b0a41121463f SHA-1: e72e27eaf0b277aa50280bab891e876a8733d080 SHA-256: 028e7fca42fc67b2559ae0d17b686f879c22a8334d4255bb7f94f47f54aba518
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagging it as a phishing lure. It contains numerous external links, with one prominent URL being https://crophysi.ru/award?keyword=importance+of+ethical+leadership+pdf, suggesting a phishing or malware distribution attempt. The document's structure, being image-heavy with minimal text and a click-outward action, reinforces its role as a deceptive lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7337

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 53 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://crophysi.ru/award?keyword=importance+of+ethical+leadership+pdf
    • http://optamorem.com/access_6_workbook_lsungenyqfam.pdf
    • http://lightly.store/james_destroys_diseases_website1zv2g.pdf
    • https://cdn.sqhk.co/lerutefo/Ogihhib/super_bubble_bobble_md_rom.pdf
    • https://cdn.sqhk.co/gixelotopa/cihjiXQ/pokemon_go_friend_finder_australia.pdf
    • https://cdn.sqhk.co/zebimapajod/be8jeia/90158109239.pdf
    • http://vinnipoh.fun/how_many_bases_does_us_have_in_germanyjefki.pdf
    • http://reweder.site/honda_odyssey_2008_manual_en_espaolc663i.pdf
    • https://cdn.sqhk.co/kitaparek/mZggGhJ/tifut.pdf
    • http://goodshopsales.xyz/fediwoxewiticettw.pdf
    • https://4a5bfc55-71df-4474-8f3e-9f6aca65c64b.filesusr.com/ugd/29b6ce_1ae6cd6780e54655a952a0106a2bb513.pdf?index=true
    • https://s3.amazonaws.com/woxotopapozokev/meratulugajixogiso.pdf
    • https://s3.amazonaws.com/zalomi/33086396739.pdf
    • https://aed022ca-8a9d-452d-9022-56a74a585a14.filesusr.com/ugd/4d548e_c89d394827e04c919917a346d6874b62.pdf?index=true
    • http://dilikibabisud.rf.gd/81910382696.pdf
    • https://s3.amazonaws.com/dudujopixejikug/53291013217.pdf
    • https://s3.amazonaws.com/wujanozo/mozutukanososiselimamo.pdf
    • https://s3.amazonaws.com/ninasivol/5952960091.pdf
    • https://8a833fea-7c9a-4d2e-a5a7-d3590f42a3e5.filesusr.com/ugd/9aab09_b19bfaa7f87648dda0765812594b8236.pdf?index=true
    • https://s3.amazonaws.com/rexogeguxosix/diversity_policy_template_nz.pdf
    • https://aed022ca-8a9d-452d-9022-56a74a585a14.filesusr.com/ugd/4d548e_ac163f344c694f0ab4dfef84bb244101.pdf?index=true
    • http://didaduxazej.epizy.com/fejariparubopom.pdf
    • https://s3.amazonaws.com/zagubip/blitzball_team_guide.pdf

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