Malicious PDF — malware analysis report

Static analysis result for SHA-256 949244ee8d57c1b9…

MALICIOUS

PDF

80.9 KB Created: 2021-03-27 11:55:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6dd004a11fbac2fb17e3b122819d3090 SHA-1: 5356b2e1c044b63c56f518e7aff88aae0e02153c SHA-256: 949244ee8d57c1b9d49c6b3186bf6e0b7be0733c66ad320c1cabeeb214f0829c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, and contains numerous embedded URLs. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates the PDF is part of a link farm designed to host disposable content, likely for SEO manipulation or to redirect users to malicious sites. The presence of external URIs and the overall structure suggest a phishing or malware distribution attempt.

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://fokemale.ru/award?keyword=english+to+german+language+tutorial+pdf PDF link annotation
    • https://zurukonovode.weebly.com/uploads/1/3/1/3/131379219/8414645.pdfIn PDF document text
    • https://sagakoto.weebly.com/uploads/1/3/0/8/130814189/94f96622bc.pdfIn PDF document text
    • http://daliadiago.com/e7_error_code_air_conditioner_dometick1pnt.pdfIn PDF document text
    • http://talajudoxuxip.mygamesonline.org/vopoboludefikavezogodavip.pdfIn PDF document text
    • http://suvekitubexeso.getenjoyment.net/combiner_plusieurs_en_un_seul_mac.pdfIn PDF document text
    • https://lulodepi.weebly.com/uploads/1/3/0/7/130776712/3478810.pdfIn PDF document text
    • https://dojebuxepoviguf.weebly.com/uploads/1/3/1/4/131407435/8d83b4e47f2e9.pdfIn PDF document text
    • http://nakanilo.club/316615307711g9bd.pdfIn PDF document text
    • http://populiro.iblogger.org/gefelox.pdfIn PDF document text
    • http://lenudes.com/buildbox_free_2019942a8.pdfIn PDF document text
    • http://madewithsunshine.com/42030969031ocdv5.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
    • http://bipunasozusi.epizy.com/meruvuredepukoluxejuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2a8f937-a328-408b-8b35-fc6095761739/brother_ls_2125_price_nz.pdfIn PDF document text
    • http://fepusum.onlinewebshop.net/dopasewepekavo.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/69711330614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3075db23-82d7-47de-b6b6-b48e4fa78a64/metitarapikibivukaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d784fee2-d82f-44b2-821d-40dd64133c8f/70330773550.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2ca9711-daed-4beb-a4d3-d85839ead985/wiziporibiluvoniv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/295810a0-d276-40b2-a2b6-5073cd0e6d10/83858378656.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE18 5292 bytes
SHA-256: d0f11d8b1f5d1a8be5413d560875b33497b41be734cb0d46f182415a4c45d265
font_01_sfnt_off0000ffe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE9 11748 bytes
SHA-256: c4211a11ff9436451bdbc25b4cf813303b818c7f37cb97a4e665f3dce21cd036
font_02_sfnt_off000127c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127C9 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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