Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aea2bb05c0c0545…

MALICIOUS

PDF

79.6 KB Created: 2021-06-02 18:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 47c2a38fc1b4fe253c10477e441c81ec SHA-1: c54cf64c4d776574816d92ed5b8c95fe35011fc6 SHA-256: 9aea2bb05c0c0545dc2d1f497dcca115f3ad38159813a50042bbd9f53ba6dfe6
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a spearphishing attachment designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://pelibifir.ru/123?utm_term=safety+data+sheet+template+2015 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449417/normal_60107ed28df76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455207/normal_601dce92117fd.pdfIn PDF document text
    • https://bofezukidev.weebly.com/uploads/1/3/4/4/134464138/1068647.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456686/normal_6015489d73117.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451753/normal_600ecb1e9f110.pdfIn PDF document text
    • https://dofopukirisozut.weebly.com/uploads/1/3/1/4/131437491/6e8515fa192b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lekuzax.pbworks.com/w/file/fetch/144418776/how_to_use_chromecast_with_bluetooth.pdfIn PDF document text
    • http://vajaxasave.pbworks.com/f/nakuziribibawadimurinela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dc963fa-5c1c-4e1e-a4fa-1bf1d7b10fc0/kuzila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/049a2728-454b-4c51-b220-d9352c6dce73/baxiper.pdfIn PDF document text
    • http://mogulobobis.pbworks.com/f/jikuxegixukej.pdfIn PDF document text
    • http://pilujibos.pbworks.com/f/18878463633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f7412c3-f378-4c07-ba7b-6d39529b4e28/puwanonoxudevinatito.pdfIn PDF document text
    • http://pilujibos.pbworks.com/f/new_among_us_hack_for_pc_direct_download_link.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc4dd3d8-c20c-4279-ac17-762e8ae79e98/34068565612.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F6 5840 bytes
SHA-256: 9b91b50475e03affd426e5ecb88a9069bd0340f1c64903a64ba3f820faab4690
font_01_sfnt_off00010dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DCC 10364 bytes
SHA-256: 6557ef775045ce2a88bdd7c2f0ef927b17b20e2485a592dc0df824ae272eef4f

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