Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af80e1995f81d34…

MALICIOUS

PDF

96.2 KB Created: 2021-01-08 17:29:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: e930cfe0398075486cdf68463e215099 SHA-1: 68031d0af6461ffdff365a87989ef01c36f89566 SHA-256: 2af80e1995f81d34099cfe79cf990ebf9aae89bb36ac36b7eff6a071a54e6ac9
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'trafftec.ru' suggests an attempt to redirect the user to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and the ML detection point towards a phishing or malware delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/aws?utm_term=android+objectanimator+translationx+example PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369507/normal_5f97e3b3546c9.pdfIn PDF document text
    • https://cdn.sqhk.co/tegatiwuwax/hanghqc/64734849994.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410431/normal_5f9658802126a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485448/normal_5fd0b97094c72.pdfIn PDF document text
    • https://cdn.sqhk.co/zefadanexa/Bgchano/20612163515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377109/normal_5f98969ca8eec.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/6e3db51f-fa65-4280-b481-ff7c907dfddd/rusalozotevos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7294e2c-7101-4d88-826f-05fba44d1402/chemical_reaction_arrow_enzyme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14fd808d-6a1e-41cb-a9fd-e81309c5be5e/kitchenaid_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/46934446030.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/grammar_practice_high_school_worksheets.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_off00013971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13971 5492 bytes
SHA-256: b861118b1a9db47062afb5324f21f195e397de8d29ca286f1f59a2f36ad3763f
font_01_sfnt_off00014c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C0A 11548 bytes
SHA-256: 99118fdf97ea0d0a4908ae14189c1b09705b52998b92c3542e0233cab07d6299