Malicious PDF — malware analysis report

Static analysis result for SHA-256 c359c1c6adae66c0…

MALICIOUS

PDF

67.4 KB Created: 2020-12-13 21:52:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c2274416af77037d9849721d9f27dc46 SHA-1: 1093568230829ed75e75e40edb00c709c7b0f105 SHA-256: c359c1c6adae66c0efcede113fc7d19d339b00702fb049aef6887995cdbfc441
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/wb?keyword=supercuts%20coupon%20pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_5fc9310f4ebf3.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/bidugevo-funolazowalus-powinuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_5f9c4d0e5a8af.pdfIn PDF document text
    • https://xuxukiworizep.weebly.com/uploads/1/3/4/7/134723333/konesututi-rukegumodilaxil-dozitawubu-zapeduwalizen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477615/normal_5fc52b11090b2.pdfIn PDF document text
    • https://xuzojawuwakobo.weebly.com/uploads/1/3/4/3/134312069/gulagekabifewix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424027/normal_5f9780dbac5c7.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/5fbce344be7cfc36344e8aaf/t/5fbe0729fa04221c71e7afbe/1606289194116/kuzubasilezowopawawuxag.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/ge_adora_front_load_washer_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe09553c02f22b9dd45f60/1606289749692/guvebag.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14bb05687f52b6b83d941/t/5fc43050fa04221c71a40ec6/1606692945509/wifi_splash_page_terms_and_conditions.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/double_dabble_algorithm.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_off0000ccd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD0 5012 bytes
SHA-256: c0dbfadd3e2674f385d8497f0499fe2495b95a206a08dc64f6bd7cc5f492c5e2
font_01_sfnt_off0000ddee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEE 10380 bytes
SHA-256: d430e34b99e66975d29f26d944defb34f24e8f14230a0519297bfbd4009b899f

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