Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f0736caadb1cdd…

MALICIOUS

PDF

72.7 KB Created: 2021-05-21 21:34:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4602ddf40000558e8e39e72e8825cb9e SHA-1: 95e84f479d12240ef26c3b1bb1d48a2dd3fe9803 SHA-256: 82f0736caadb1cdd3cc0fa492b5dbb0ff20ba25eb313395b91b3469945b66ba4
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 0.9996

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://bologen.ru/strik?utm_term=meditation+the+ancient+egyptian+path+to+enlightenment+pdf PDF link annotation
    • https://sinukofulav.weebly.com/uploads/1/3/4/6/134634738/7610532.pdfIn PDF document text
    • https://rixilokif.weebly.com/uploads/1/3/4/1/134109141/1104137.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464052/normal_5ffeccfd7ed30.pdfIn PDF document text
    • https://liwotagavujid.weebly.com/uploads/1/3/5/9/135961529/3385521.pdfIn PDF document text
    • https://juwizezajofop.weebly.com/uploads/1/3/1/6/131637218/sikaxedas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481423/normal_60508cdf581e1.pdfIn PDF document text
    • https://woxoxoba.weebly.com/uploads/1/3/4/8/134893248/motime-famol.pdfIn PDF document text
    • https://tuverasoxodos.weebly.com/uploads/1/3/4/7/134745130/juwuzolawobebod-bavanudi-tikateruv.pdfIn PDF document text
    • https://gixawixo.weebly.com/uploads/1/3/4/3/134322292/4727337.pdfIn PDF document text
    • https://ruxebawinafa.weebly.com/uploads/1/3/0/7/130776533/1998104.pdfIn PDF document text
    • https://posenumu.weebly.com/uploads/1/3/0/7/130776111/faa6b873.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_602d2f826a0f4.pdfIn PDF document text
    • https://tapuwapefozex.weebly.com/uploads/1/3/4/3/134350869/ruvokomadenigejimuj.pdfIn PDF document text
    • https://balejumefem.weebly.com/uploads/1/3/0/8/130814467/8899685.pdfIn PDF document text
    • https://dekukosozo.weebly.com/uploads/1/3/1/0/131070054/81e80a7e914.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380413/normal_5fc85ddfecc38.pdfIn PDF document text
    • https://monisobagarov.weebly.com/uploads/1/3/1/8/131856119/eb81be4ae537.pdfIn PDF document text
    • https://ralixuviromod.weebly.com/uploads/1/3/5/3/135345966/mabot.pdfIn PDF document text
    • https://gibitiwatu.weebly.com/uploads/1/3/0/7/130776060/nimopinanop.pdfIn PDF document text
    • https://tiseparalav.weebly.com/uploads/1/3/4/7/134735838/294825.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414161/normal_6042d6cade93c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000de1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1A 5404 bytes
SHA-256: 43a26668fca0d77e0b08b6e39d8fe4a098a2979af8c8507df51e8b7d09199637
font_01_sfnt_off0000f075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF075 10620 bytes
SHA-256: 215f656a6325b82455f117c1b4e6897200510388780df8a2268f7b87664759ec

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