Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f6b68ecaaa8444d…

MALICIOUS

PDF

68.5 KB Created: 2020-12-01 03:10:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 8af3fd9ea0cf7c7890c39c1e63aa3cda SHA-1: 17e3d480a55b25e60175567d27ead87de217daa2 SHA-256: 5f6b68ecaaa8444da27b4ad1ef4d001b5cfec05abf068e341752410a0522b4dc
154 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 ML classifier also strongly flagged this PDF as malicious. The embedded URL, 'https://traffine.ru/aws?utm_term=wedding+background+hd+wallpaper+free', is the primary indicator of malicious intent, likely serving as a lure for phishing or to download a secondary payload. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/aws?utm_term=wedding+background+hd+wallpaper+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4405193/normal_5f99a0024edb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368495/normal_5f90564ff3b87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377391/normal_5fb2761c2e395.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf38e73299f0c54390065/1606218655215/28764491038.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c273a13a450babf34cb7/t/5fc1c23e9ee0f32b879446fb/1606533695273/cooking_merit_badge_worksheet_answers_2017.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc292fabda9c57a97c8d54c/t/5fc583763485235c8682f057/1606779767310/xopugasolupinafofaj.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/nuclear_decay_reactions_worksheet_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f319ab79f442f229e2d8/t/5fc1741a1972c46e3cd5ddb8/1606513690808/pokemon_emerald_rom_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0065bc819f1cf49efdb8/1606287462438/31138874034.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c34a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC34A 5352 bytes
SHA-256: 1194f85a368eb6f0cf4745fd126afbc2a36b0a396bcd35db547d9d2f90f5b236
font_01_sfnt_off0000d584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD584 9828 bytes
SHA-256: 526956bb817359885f5de2f58cfbbc21e6f0a6ae648cffccac520e89dc9a3fe6
font_02_sfnt_off0000f72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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