Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be1e7804c324aed…

MALICIOUS

PDF

42.5 KB Created: 2020-11-04 15:17:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b970067715226db1ea9e95c1217e3cb7 SHA-1: 4314da707b547fdd01165ac19d6060d3d6fcd1c1 SHA-256: 9be1e7804c324aedce424015409bf3b056391b30aa61e550fcdefa0c58c7ebde
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://gettraff.ru/aws?keyword=question+36+impossible+quiz' is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest an attempt to lure the user to a harmful site, consistent with phishing or malware delivery via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?keyword=question+36+impossible+quiz In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404529/normal_5f9e4cbe9c34b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445343/normal_5f9d2d280ea37.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/zomuzigo/gozasuwinik.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/83840557044.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/65643982559.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/medway_youth_baseball_complex.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/retavazuleg.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/relation_between_torque_and_angular_momentum.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/dropping_acid_the_reflux_diet_cookbook__cure.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/sample_answer_to_ud_complaint_california.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/62456603728.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/wexunevoziruzidedexu.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/76093042850.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/86742499498.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_off0000666a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x666A 5352 bytes
SHA-256: 030527eee140bd5c1b451b70a324a25849a8f3a4672ce1d668351ba9eb3e4493
font_01_sfnt_off00007893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7893 10952 bytes
SHA-256: b99c9311a8a5da19f93eeaf730c80ec353db289ae3520d0f1ea92e016646f47b