Malicious PDF — malware analysis report

Static analysis result for SHA-256 750f06e83a46807d…

MALICIOUS

PDF

80.5 KB Created: 2021-06-09 12:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a0b8c7a767cb70c4106a08ef35fa9c99 SHA-1: 7560dc6467cb12b3144b10f55bc87310387b2de8 SHA-256: 750f06e83a46807d2176f54ff330e844213e82708963309ce5e3d5a4fc19c28e
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 services, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and numerous URLs suggest it's part of a campaign to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://allytemp.ru/pbw?utm_term=unseen+passage+for+class+6+worksheet PDF link annotation
    • https://tizevilujiv.weebly.com/uploads/1/3/1/4/131406709/e23347c209d.pdfIn PDF document text
    • https://kowabimope.weebly.com/uploads/1/3/4/3/134359524/5341861.pdfIn PDF document text
    • https://poxanopa.weebly.com/uploads/1/3/4/3/134380657/gibubijasarij.pdfIn PDF document text
    • https://gatofofuxiwiv.weebly.com/uploads/1/3/4/2/134265530/vofin.pdfIn PDF document text
    • https://fudonorovivur.weebly.com/uploads/1/3/4/6/134665028/fodewogedot.pdfIn PDF document text
    • https://bederoka.weebly.com/uploads/1/3/4/8/134886295/34ad06b3cc493.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416796/normal_6007c793a901d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451021/normal_5ff3b4abd9691.pdfIn PDF document text
    • https://luvikexixof.weebly.com/uploads/1/3/4/4/134481561/7915750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385214/normal_6021f9707bc0e.pdfIn PDF document text
    • https://difodofixipa.weebly.com/uploads/1/3/0/8/130814112/d8089a4dde8ef.pdfIn PDF document text
    • https://nowesepi.weebly.com/uploads/1/3/1/1/131164229/dudusemixutonug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470035/normal_6049cea95b73c.pdfIn PDF document text
    • https://kivifakan.weebly.com/uploads/1/3/4/8/134870172/mubupuditebuwis.pdfIn PDF document text
    • https://pinababinazu.weebly.com/uploads/1/3/2/6/132695354/893d5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_6016c45781a68.pdfIn PDF document text
    • https://kovovovugatu.weebly.com/uploads/1/3/4/5/134599685/9200764.pdfIn PDF document text
    • https://fomemifeju.weebly.com/uploads/1/3/4/7/134769467/1821845.pdfIn PDF document text
    • https://gijejutet.weebly.com/uploads/1/3/5/9/135974865/784bc5a9.pdfIn PDF document text
    • https://xamegazu.weebly.com/uploads/1/3/4/4/134440804/nukufesule_rapibufo_lafuxiled_bizusozavo.pdfIn PDF document text
    • https://kevugekakizuxo.weebly.com/uploads/1/3/4/4/134481001/6438ca34da64.pdfIn PDF document text
    • https://sosijujanakuf.weebly.com/uploads/1/3/5/3/135387992/3256861.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2e4fd565-d3dd-49bb-83d0-0b7a22f1b95c/32590559321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/527b0a90-0a6e-4ec5-b1c5-43949987d06e/82036159849.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b0ff3b2-d10d-477b-ad6a-32f94a4c9518/10846099769.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5ff8c7a-b672-4cb3-bf60-7d2885dae2cc/my_tom_2_mod_apk_2.4.0.544.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c04e8746-e8fa-4020-879e-741ee037b279/kegit.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3C 5316 bytes
SHA-256: 04ce650c9fd05cf37175a008c9f9a451b13b087b20236aaba481aa55f79a91a4
font_01_sfnt_off00010159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10159 10716 bytes
SHA-256: b80603ce32140cdd6661ea2e7d66d83a7216cb5223c9aba8a100198c9c007bde
font_02_sfnt_off000125e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125E8 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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