Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c3424104604889…

MALICIOUS

PDF

76.3 KB Created: 2021-03-22 01:46:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1a54f3a5b69fffa8b363c685dfe044b3 SHA-1: 984aba14c08e2072772c0cdf35fe4dd740d20569 SHA-256: 60c34241046048892f49bc93f2ed1af9411dce5061aa1406720a9af1da3bebbd
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 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://jacksth.ru/strik?utm_term=true+to+the+game+3+book+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403119/normal_5fd670d4ba7d6.pdfIn PDF document text
    • http://pasetbs.xyz/britax_pavilion_70-g3_replacement_cover1qeby.pdfIn PDF document text
    • https://fokomawirofuteb.weebly.com/uploads/1/3/0/9/130969657/ba8b71f4.pdfIn PDF document text
    • https://zumizosapozogem.weebly.com/uploads/1/3/2/6/132681504/vilipikoxi.pdfIn PDF document text
    • https://gikapizuwixa.weebly.com/uploads/1/3/4/0/134097763/vegifit.pdfIn PDF document text
    • https://latewumopinigan.weebly.com/uploads/1/3/4/3/134313498/97c42b3a9a41.pdfIn PDF document text
    • https://laregupofonel.weebly.com/uploads/1/3/4/4/134464195/a6b9ef25b9b995b.pdfIn PDF document text
    • https://digeforoxega.weebly.com/uploads/1/3/4/6/134668277/46ec99e3cd.pdfIn PDF document text
    • https://xubivolimoba.weebly.com/uploads/1/3/0/7/130740090/pidivilufeg.pdfIn PDF document text
    • http://fasoxuxesatilu.sportsontheweb.net/3318019073.pdfIn PDF document text
    • https://zumaninerotuz.weebly.com/uploads/1/3/1/6/131637595/natefe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375351/normal_600628309c1e0.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/how_much_does_a_bobcat_cost_per_hour.pdfIn PDF document text
    • http://arthromedshop.xyz/733013644400lkrf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/24191660446.pdfIn PDF document text
    • http://ketabigumowun.atwebpages.com/44534901675.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/72480559344.pdfIn PDF document text
    • http://bejanifezilo.atwebpages.com/public_relations_n5_textbook.pdfIn PDF document text
    • http://kalasoziluxolim.myartsonline.com/daguwagekenogofurima.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_off0000eced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECED 5288 bytes
SHA-256: be604370e1195e1a7bcc9a6de9792059371ab668c210aa2321c3e7b11e3f7ef3
font_01_sfnt_off0000fecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFECF 10976 bytes
SHA-256: b932d0b1e8c06fb42757d1b13616fed97d40bbc8173f92f81b33d09093bd5a2e

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