Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aae9d3a02aea97b…

MALICIOUS

PDF

84.4 KB Created: 2021-03-20 15:54:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c03cb86e85565328f20415b7318409e7 SHA-1: ed0bf6681d53d1bc397414dbbe55462520673818 SHA-256: 3aae9d3a02aea97bf8a4a526d5be3d90541572e290954d5b79a0c1e80540ee95
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable hosting and link farms, a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://seumenha.ru/wix?keyword=diono+rainier+manual PDF link annotation
    • https://xibuzapesajeg.weebly.com/uploads/1/3/4/2/134236274/livuwodizexusil.pdfIn PDF document text
    • http://kelirajisob.66ghz.com/35277444953.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374682/normal_5fff991ba4a49.pdfIn PDF document text
    • http://raftgjgr.space/xipirekubagine6e4jg.pdfIn PDF document text
    • http://luzikudejijes.22web.org/pusizidemajofukarazubo.pdfIn PDF document text
    • http://italysummer.space/left_hand_of_darkness_character_analysisec4bm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457279/normal_602a0c3868f1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_60316a2e88ca1.pdfIn PDF document text
    • https://nudetotiba.weebly.com/uploads/1/3/4/8/134872476/zixevowasan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406793/normal_6036b66cf0930.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d2faa26e-66ca-44cd-8f84-883624a71019.filesusr.com/ugd/dbbfd0_fef0bc10018a4bed8a35f2e368812725.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/83371bf3-bc3d-43fb-b9d5-777f5df373e0/what_modem_router_is_compatible_with_spectrum.pdfIn PDF document text
    • https://ea7788ad-ef5a-48b5-911d-3ad522045378.filesusr.com/ugd/f3bfbb_4affa95a88dd4a0197289c95f1c3c08e.pdf?index=trueIn PDF document text
    • http://bikukasosisado.epizy.com/dasir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40314395-eb81-494c-a1ad-40e0e6702942/55593540275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3058ff31-baaa-4e4a-bae5-2713bfa7ed56/poxoxagevegaj.pdfIn PDF document text
    • https://5e54824a-8208-41b0-8aeb-7c017e8cfb46.filesusr.com/ugd/f64db8_fcda321fd7ee48e5914a1cd2f081253a.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001106c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1106C 4652 bytes
SHA-256: 80e8143923cc6d128c55f660e98dfe577d2a831b289076631bd038492e693607
font_01_sfnt_off00012026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12026 10796 bytes
SHA-256: 07370036bdb5afa833bc0bb34fd8cfb4c54bb4b92e65108256ea8eccbfa202ed

Open this report in the interactive analyzer, or submit your own file for analysis.