Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc91c99156dfbc1…

MALICIOUS

PDF

68.1 KB Created: 2020-11-13 05:11:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 04db72e15fc2cf30e11d9f9b4e0264de SHA-1: 26096f138cc80bba80417543185c5d97837b3ce4 SHA-256: 3bc91c99156dfbc18c8177238ca6eb33188d625446f78a46dc89f31e17e5583b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, suggesting a link farm or phishing attempt, with one URL pointing to 'traffking.ru'. The PDF structure and embedded content indicate it's likely designed to redirect users to malicious sites, potentially for further exploitation or credential harvesting.

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 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.
  • 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://traffking.ru/strik?utm_term=the+unofficial+holy+bible+for+minecr PDF link annotation
    • https://lagafuxomip.weebly.com/uploads/1/3/4/3/134347440/tijanuziverit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374188/normal_5fa9e6db47c67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f8b9d8327433.pdfIn PDF document text
    • https://likivaduzizi.weebly.com/uploads/1/3/4/6/134699319/5364424.pdfIn PDF document text
    • https://zabapekiji.weebly.com/uploads/1/3/4/4/134470890/bakexejiruwakodeja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408172/normal_5f99cb8fe2ef2.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/fibawubaxavuvabu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371788/normal_5faa0ab0e4c19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391649/normal_5f8fc4e6ac778.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/5471bfcb-7e4d-4320-a995-c09ff7c9530f/67805422318.pdfIn PDF document text
    • https://s3.amazonaws.com/vopadofugon/70582853019.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/bejaxuxusirobetebol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b379cc4-9d9e-48b5-bbd5-fe190a7b24e6/bikuziwemototi.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD83 5132 bytes
SHA-256: 83ce5c7b279eaa24fb3fb0b0a87a4d918d54297074fdac2ce6b975ca180adb74
font_01_sfnt_off0000dedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDD 10684 bytes
SHA-256: af9d57d43a115ff086491524d6e59941ab01d7e9b7ba426001c8a09b58e76fd5

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