Malicious PDF — malware analysis report

Static analysis result for SHA-256 9366a46ca0fecc4c…

MALICIOUS

PDF

76.4 KB Created: 2020-12-29 20:17:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d9b4c566b77e3b1089a459b131d9fcb4 SHA-1: ea105695f9dca818ffc14b8796b0e4f79f47e251 SHA-256: 9366a46ca0fecc4c59868eebc1a8b2f999566033138b97f0091a401107b1b91e
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO link farms and potentially malicious redirects. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, with one pointing to a suspicious domain 'trafffe.ru'. While no scripts were explicitly extracted, the presence of embedded PDF objects and external links suggests an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://trafffe.ru/123?utm_term=the+pelican+brief+pdf PDF link annotation
    • https://cdn.sqhk.co/makubeku/UjLKiVb/driving_school_3d_nitro_asphalt_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/masunidupag/hePiaWu/ball_obstacle_course_fortnite_code.pdfIn PDF document text
    • https://cdn.sqhk.co/fobojuwof/jgvS0N4/26131792865.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368469/normal_5fc3509302df6.pdfIn PDF document text
    • https://zedimubaxujejit.weebly.com/uploads/1/3/4/7/134715534/8261262.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/megodipewukitoj/luvekoxajigufedipena.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/safobetufugarugejowo.pdfIn PDF document text
    • https://s3.amazonaws.com/pusumowi/sandisk_clip_sport_plus_player_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/naperville_dmv_hours_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f82c1fd-41e0-4303-b58b-948e21571631/44498412608.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/27809780353.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df747e6a-efde-41b4-9052-45a054bdde7b/74900948911.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_off0000eb9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9B 5152 bytes
SHA-256: 7a225f54b03dda64f6ae677cf3420eb47a0bd4bdbd74f0c508aafbfbeb802d0b
font_01_sfnt_off0000fd14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD14 12168 bytes
SHA-256: d440f0429f64111b7e7372e2dc4a11cf902c2e5802f9e47d81ef70eb0680a694