Malicious PDF — malware analysis report

Static analysis result for SHA-256 c662dba14185f884…

MALICIOUS

PDF

96.1 KB Created: 2021-04-23 04:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d3133fa2a240ce5f64cf0146216e4025 SHA-1: b97f88105d6d208d9c94f265cb2b2bc783b354a6 SHA-256: c662dba14185f884ad986ba409b4fd68e3bd2cc5e03f70f6a3813a22c346e232
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://dafemum.ru/strik?utm_term=what+3+things+is+meat+composed+of PDF link annotation
    • http://feludekinopotas.scienceontheweb.net/betozufefisanuwikefopuzu.pdfIn PDF document text
    • https://cdn.sqhk.co/xekemini/9dv7q2o/54511701806.pdfIn PDF document text
    • http://ruwufuwetoj.mygamesonline.org/binomial_multiplication.pdfIn PDF document text
    • https://cdn.sqhk.co/nulusezitelo/jhK6nKQ/74939407760.pdfIn PDF document text
    • http://dapovevi.mywebcommunity.org/lasupusoxewumaxexujo.pdfIn PDF document text
    • https://cdn.sqhk.co/molipigi/ih07xaw/age_of_sigmar_battle_plans_2020.pdfIn PDF document text
    • http://melowimaz.getenjoyment.net/fezilefuwugokuretas.pdfIn PDF document text
    • https://cdn.sqhk.co/bovavadas/gYfWhqL/xesoxim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471945/normal_6026dfab065c0.pdfIn PDF document text
    • https://cdn.sqhk.co/mosugukasiba/X2c9Rgf/tan_leather_sofa_room_ideas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411250/normal_5feb2375a595d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1cb13d1-30a8-4e7e-96d0-22286e0c0179/61376068006.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/38031363478.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/situxipabamilu.pdfIn PDF document text
    • https://a3e8d6b6-68ee-4625-a313-a25a09dbd39d.filesusr.com/ugd/312e12_d325ab77b3504f46a36d506758ab772e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kubafezin/fudizivapenitob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e479a0d-5f0a-4126-8ce1-1013ac11ba06/40890333254.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/tusakuniraxumagaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/les_cercles_de_la_forme_republique_planning.pdfIn PDF document text
    • https://e3055f73-6236-423b-b810-4bc1a15f300f.filesusr.com/ugd/fa12d1_0f8f587fa8c448498703c4d9388fe8f5.pdf?index=trueIn PDF document text
    • https://71fc3d66-43b2-4ae0-adc3-dfbcdf8b5360.filesusr.com/ugd/6605a0_136173a14be5436ba9d1fe79616e1b1b.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

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_off000136fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136FD 5620 bytes
SHA-256: 120c1a1d6591d1dfc0f9d780a272961f0347614eaeedaeb98abdc3e092524c7b
font_01_sfnt_off00014a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A11 12552 bytes
SHA-256: f62de089e93bb17a06b362c9cfd167c2dbc99690a078e96d27417f5726ccdfb7

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