Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8fa7970bf829097…

MALICIOUS

PDF

72.2 KB Created: 2021-02-24 20:01:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a226ef2f6f94d409be00060304e633f0 SHA-1: a2921344b1df630ad8b490a95e81c99c6940201d SHA-256: f8fa7970bf82909719f53e36ecf44096474d4df34d3351a643946947b859e7e6
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to domains flagged as disposable or part of a link farm. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or distributing further malware. The file's structure and numerous external links suggest it's designed to manipulate search engine results or lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8212

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://bologen.ru/award?keyword=macroeconomics+importance+and+limitations PDF link annotation
    • http://newberginvestmentproperty.com/simplenote_markdown_previewbc6qk.pdfIn PDF document text
    • https://bosaralox.weebly.com/uploads/1/3/4/6/134608385/96273.pdfIn PDF document text
    • https://cdn.sqhk.co/posiraki/dCq3ngX/ancient_rome_siege_warfare.pdfIn PDF document text
    • http://1ux.site/kafefa9dujw.pdfIn PDF document text
    • http://mosaniz.22web.org/dragon_ball_games_free_full_version.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/jheife4/ligaturanid.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/7ijwij9/kefisum.pdfIn PDF document text
    • https://beburasitowetu.weebly.com/uploads/1/3/0/9/130969608/dotisugemitana-wevusatet-nizaguson.pdfIn PDF document text
    • https://cdn.sqhk.co/pabilere/eS0ihic/crossy_heroes_avengers_of_smashy_city.pdfIn PDF document text
    • https://cdn.sqhk.co/xakalodesi/giiesjj/brave_soul_oscar_trainers.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/ih4iaZ4/dabab.pdfIn PDF document text
    • https://zamosokajuzosa.weebly.com/uploads/1/3/4/6/134651904/b153ce9e.pdfIn PDF document text
    • https://cdn.sqhk.co/linidivez/aghDU5D/megabus_chicago_to_memphis.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/fjgjKhh/photo_collage_maker_free_download_for_windows_10.pdfIn PDF document text
    • https://nobewiga.weebly.com/uploads/1/3/5/3/135315034/57cd7a975.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mivuwujat.rf.gd/47480695845.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/feeling_alone_whatsapp_status_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/printable_blank_bookmarks_template.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF886 5224 bytes
SHA-256: 9860c340bafeb2237017886a76c67153eae8a5d99f1fab144f93b9d30f9cd77a

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