Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a1ffb52ff26bd61…

MALICIOUS

PDF

77.5 KB Created: 2021-03-20 16:28:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 04f0be201fae92f0d45736f568e4cf16 SHA-1: 056b11df539bc600c4a7d375cff8081e57b57261 SHA-256: 1a1ffb52ff26bd6164cdb5cc3a79532de4817a17407236c056d2a4f50869b419
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a significant number of external links, identified as a link farm, hosted on disposable domains. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The embedded URLs suggest an attempt to redirect users to potentially malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7190

Heuristics 5

  • 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.
  • 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://lozipotod.ru/award?keyword=hubbard+broiler+management+guide+pdf PDF link annotation
    • https://dixatuwep.weebly.com/uploads/1/3/5/3/135398053/tatekelelidemag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381735/normal_602aca9e83ae9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487918/normal_600030b85be1c.pdfIn PDF document text
    • http://xtrading.buzz/chicco_bravo_stroller_wont_foldx50vd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530868/normal_5fd6790606eb9.pdfIn PDF document text
    • http://verifedform.com/66297034276cq48s.pdfIn PDF document text
    • http://tasigezagu.scienceontheweb.net/3959887065.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451365/normal_603cb25327385.pdfIn PDF document text
    • http://fupemagis.mywebcommunity.org/is_nj_transit_monthly_pass_round_trip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403804/normal_604f2ec0dc6b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377380/normal_603cfa757e019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465393/normal_601f055d46232.pdfIn PDF document text
    • https://dafepigog.weebly.com/uploads/1/3/4/6/134605944/wezazadofu-lelowasedutol.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/42521063635.pdfIn PDF document text
    • http://fridgeservice.ru/can_i_use_my_roku_stick_without_the_remotehi29l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417406/normal_60026799d5285.pdfIn PDF document text
    • https://zowotojezef.weebly.com/uploads/1/3/4/3/134330732/1af35e4b1.pdfIn PDF document text
    • http://mybestchan.online/9235668050244r2w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461216/normal_6028a26aee864.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387226/normal_5ff107bfc334a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367294/normal_600058702b7a3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7E 5168 bytes
SHA-256: 3267da4a0ac12acb5dd1429d4493c7a130e98646798acc2cd8a068d68433bc92
font_01_sfnt_off00010cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CEE 11708 bytes
SHA-256: c3d1bdfdffaeaf6437c4b2252245e7cb8b43ea33bf5998928fe6d43a22f75982