Malicious PDF — malware analysis report

Static analysis result for SHA-256 a700f2db70eafc6c…

MALICIOUS

PDF

62.7 KB Created: 2021-02-26 17:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0ced766bc6cdecbc6f319c6ab42c6c33 SHA-1: 357759ece5405c27890239d064958fa0d47c8745 SHA-256: a700f2db70eafc6c33071b60badd00c047a68601693b36a1f2b6e000d085d1c7
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with one heuristic identifying it as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were extracted, the presence of external URIs and the link farm nature suggest the document is designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9736

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=best+drill+bit+for+metal+home+depot PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368225/normal_60176ed9ab30d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480412/normal_602ca0ef15dde.pdfIn PDF document text
    • http://namunogetivij.iblogger.org/95330123348.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/czjihh9/alienware_mouse_aw558_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389353/normal_5fe1fbd43b3e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446512/normal_60117d6787f78.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mapulikilep.epizy.com/ipcc_audit_amendments_for_nov_2018.pdfIn PDF document text
    • http://zefinut.rf.gd/wumerulude.pdfIn PDF document text
    • http://nopexuwub.rf.gd/horizon_zero_dawn_data_point_guide.pdfIn PDF document text
    • http://gusutawidike.epizy.com/33924606233.pdfIn PDF document text
    • http://jegelafaxorew.rf.gd/22854171643.pdfIn PDF document text
    • http://nitusubor.rf.gd/atmel_studio_library.pdfIn PDF document text
    • http://tedijafubivot.epizy.com/raj_bstc_admit_card_2019.pdfIn PDF document text
    • http://rokopuma.epizy.com/70258934194.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFF 5472 bytes
SHA-256: ec4645831892ea22f7cba338416ebc1490c1a6b65f5ca5974193c00197c62876

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