Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b0a71b89113a5d…

MALICIOUS

PDF

81.6 KB Created: 2020-11-29 09:16:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 64ac14abcd9629a8c611275eeb5f4331 SHA-1: 010d6c18a9477596d7ce3e2647b3547c019010d9 SHA-256: b3b0a71b89113a5dd30216d609314b3f28ce83e1b7d7d9ffe44b356524de72f4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple embedded URLs, with a primary focus on directing users to 'traffset.ru'. This domain is associated with phishing and link farming, suggesting the document's purpose is to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffset.ru/strik?utm_term=laura+vitale+recipes+youtube PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421464/normal_5fb400eaf2ee2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f89d95f99081.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367937/normal_5fc179c32b401.pdfIn PDF document text
    • https://jotitotibewava.weebly.com/uploads/1/3/1/3/131383271/basiwonaribe-lupolubisujase.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f953cd230cbc.pdfIn PDF document text
    • https://duxevuwelinabim.weebly.com/uploads/1/3/4/3/134353564/zijeno.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/1d8c89f3e56.pdfIn PDF document text
    • https://zozabamefopofa.weebly.com/uploads/1/3/4/2/134234868/walama_vomivifuwedika_vusotu.pdfIn PDF document text
    • https://girenofozajete.weebly.com/uploads/1/3/4/4/134476001/bizaxefakemakologa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370266/normal_5f88384171e04.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/67f1f7e2-6110-4612-b428-fe9ddfd05eb0/zopavevakolibe.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/ridibomaxojaxatefixejufos.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA77 5168 bytes
SHA-256: a4871e96a21e3d4638c4fa27c937e1bc56d72f82d92beab367b7c9239a52e7b7
font_01_sfnt_off0000fc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC29 11068 bytes
SHA-256: 7dacd804c1a81e5eb23eff33f3d80add23647d3edb67606b68ddf64a499b9440
font_02_sfnt_off00012211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12211 16336 bytes
SHA-256: e473ea9ce27282f5602050976a13c0c27a0685bba733638efedba52cbca1fe74

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