Malicious PDF — malware analysis report

Static analysis result for SHA-256 67eea50ad4ec8ef3…

MALICIOUS

PDF

60.3 KB Created: 2020-11-26 20:50:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 081df604dfb15ac7b81ed773841c852a SHA-1: 6fb0c106e017a52e127749220cd92136825d5a56 SHA-256: 67eea50ad4ec8ef33e9fdd32c0703e89ebe30ccb9e2443e8afb7fb8b53a4bdde
156 Risk Score

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 5

  • 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.
  • 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://traffine.ru/strik?utm_term=yada+backup+camera PDF link annotation
    • https://raxiruzaxulam.weebly.com/uploads/1/3/0/7/130738564/f67df7.pdfIn PDF document text
    • https://xufibafit.weebly.com/uploads/1/3/4/4/134403857/jigavubajaju_xewix_bufidip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5f9bf57f2960b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393790/normal_5f9f3e2eead51.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/matogapibelifiv/bahubali_movie_telugu_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00b9f882-3bc2-4afa-8df6-9e8b5054d0fc/pitikak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ee1510a-86e9-44b2-9330-e41cb4dcf59b/isunshare_windows_password_full_vers.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/dilabeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f95bee09-66a0-468a-a62e-e540aa26601e/75423029615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f1d0a25-1544-4426-8a22-e3c640b7e572/wilder_vs_fury_reddit_streams_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/358e3e31-51cd-4e08-a02e-b206cc2618ac/wag_dog_application_answers.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_off0000b006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB006 5176 bytes
SHA-256: fd866c3c79604c42bc263d5c0369480cd2b31f721e092309ad1b34cd38289865
font_01_sfnt_off0000c18a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC18A 10552 bytes
SHA-256: c272e6df97f0d8dbc169777403235e348f5b51a8916130896171019c5d25d2b8