Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c449783e93ddddb…

MALICIOUS

PDF

61.7 KB Created: 2020-12-11 18:44:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 10275f34d4bbf7de1e303d09c5f7e1a5 SHA-1: 3804552dc7d85e6e4424b41b9a4d04bcdfc0ca5b SHA-256: 0c449783e93ddddbb08a8c9c0c178a3bc3a25682bbc847b3558f4a43af2a4c5f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=cheek+to+cheek+frank+sinatra'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, characteristic of phishing or malware delivery campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://gettraff.ru/aws?utm_term=cheek+to+cheek+frank+sinatra In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385850/normal_5fba256f285bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366984/normal_5fc9db24c41a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493610/normal_5fc7a3a3eeed1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc136563398ff7515300e75/t/5fc34ef34e98326c027b3178/1606635252143/rezo_a_san_judas_tadeo_para_un_milagro.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/bootstrap_studio_4._3._7_crack.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf42e6a371610b876ac5b/1606218817162/clash_of_clans_christmas_trees_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/zawupexamaferufe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79eaf0d716e027b05163b/t/5fcf451414319a51dc2de9c9/1607419157131/battery_tender_plus_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5aea4c6d964583642b5cb/t/5fd0927aa4b4ef2db6a8d2b3/1607504506983/34775582537.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf9e7ec0a1d2b4e55820e/1606220263684/cisco_asa_vpn_configuration_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b5a3c30a162e0c73770f/t/5fcadd85b6b7366152ecceb6/1607130503425/leadership_skills_resume_phrases.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_off0000b557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB557 4908 bytes
SHA-256: e2c8247946fe2488eb0b6161660ccc2eca7a9f5e266d1daa9a74b013b1e858c3
font_01_sfnt_off0000c5fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5FA 10532 bytes
SHA-256: 353413890b56c502b9a7b19721b80eeb7c7eb1c11b041c30e663ae88f1cce6a4

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