Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec757976e1de933…

MALICIOUS

PDF

72.4 KB Created: 2020-11-18 09:06:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d03d5fac01a474581412a2b4bab5a6cb SHA-1: 9be733c15932eb5493294bffd7b87adc33d2b042 SHA-256: 5ec757976e1de93399b337eaa9512b82733d0e23504a60ca789825a8cf87923b
196 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. It uses a password-protected-archive lure. 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 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafffe.ru/strik?utm_term=one+spirit+medicine+book PDF link annotation
    • https://dujepevuzewu.weebly.com/uploads/1/3/4/3/134313590/8458710.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/mikukinib.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/bokaxafixizan-wakodoxabuwo-tebamimisak.pdfIn PDF document text
    • https://sewobefavewekog.weebly.com/uploads/1/3/4/3/134367647/9285270.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/mukut/angle_of_elevation_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fa529d7-819e-461b-91a4-cdd283286eb3/jusupunonavipevowaj.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/recruiter_training_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5d7e331-f712-47cc-963c-322f36e04380/fbi_crime_classification_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/82903372731.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/duladusevirini.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d78c04a1-e236-46e5-8a3a-97be4760e724/vazobere.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_off0000deff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFF 5208 bytes
SHA-256: 91fa8413d8e9b2ea27d554a1463740bdbf5dd7d4a3f2d9449853c6efd445c2e7
font_01_sfnt_off0000f099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF099 10820 bytes
SHA-256: 8be117bcca0d0401838821df906bf920e815d3a301808c703bee967e7ef8a5ca

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