Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e54c637ec481fc4…

MALICIOUS

PDF

52.6 KB Created: 2021-02-24 01:29:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 69306c3379246915dcc098450b869848 SHA-1: 28df2920018a69c0cf031b024a0583e52a78079f SHA-256: 2e54c637ec481fc4b887f0723a011c088a582fb3449c3150be68d9dcb61ec330
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, with one pointing to a suspicious domain ('baarspo.ru') that is likely used for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed as a link farm on disposable hosting, further supporting a malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's a lure to a malicious site, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7516

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://baarspo.ru/aws?utm_term=2018+ferrari+california+0-60 PDF link annotation
    • https://jolibudowuw.weebly.com/uploads/1/3/4/5/134596284/mavokuwekimaso-jaterun-jonasatixitog.pdfIn PDF document text
    • http://shop-you.xyz/kuminupigepisovonarazcy6nh.pdfIn PDF document text
    • https://dajepulexito.weebly.com/uploads/1/3/4/5/134591334/tojenamuku-pufujesomete.pdfIn PDF document text
    • http://wei-nmvc.com/night_begins_to_shine_sheet_musicmu4yt.pdfIn PDF document text
    • http://gsmall.space/best_offline_iphone_games_for_road_tripslkxhl.pdfIn PDF document text
    • http://fakaripeti.xyz/reglas_de_calculo409el.pdfIn PDF document text
    • https://zujetopefij.weebly.com/uploads/1/3/4/7/134766602/3657302.pdfIn PDF document text
    • http://sks-expertiza.ru/17202991465fsh5p.pdfIn PDF document text
    • http://migotugiwuzefez.epizy.com/zomawaduj.pdfIn PDF document text
    • http://pisobak.epizy.com/complete_list_of_carl_jung_books.pdfIn PDF document text
    • http://gewofudi.rf.gd/aetna_medicare_advantage_reconsideration_form.pdfIn PDF document text
    • http://zefumegidadaj.epizy.com/zukavejaposub.pdfIn PDF document text
    • http://ferurexage.epizy.com/long_term_liabilities_balance_sheet_example.pdfIn PDF document text
    • http://pamajaxa.epizy.com/information_technology_meaning_in_arabic.pdfIn PDF document text

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