Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9485b3ce484c8e…

MALICIOUS

PDF

147.2 KB Created: 2020-11-12 13:40:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0ef3b137c495d303936f205c2ce372e0 SHA-1: 9ab999d368245e924dd061492b2647fa2e05e8ea SHA-256: ee9485b3ce484c8e63d072b62969b94a00a6f7a64507e675104ffc421241d8be
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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=tablouri+ieftine+pictate+manual'. 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, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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=tablouri+ieftine+pictate+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372985/normal_5fa66e9974265.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/b4e6966cf639ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387424/normal_5f8eadec34f49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368486/normal_5f882c2be6e91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405437/normal_5f92173f46a11.pdfIn PDF document text
    • https://vuvajufuzuno.weebly.com/uploads/1/3/4/4/134480129/7c8e7.pdfIn PDF document text
    • https://tenagudewujuga.weebly.com/uploads/1/3/1/1/131164273/5a46e4a03f1de62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384150/normal_5f8ceca8528c4.pdfIn PDF document text
    • https://nunoperiv.weebly.com/uploads/1/3/1/8/131856708/newafisinanal_forakexol_tudosebetu.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://s3.amazonaws.com/sixenogafopoj/jivaziwaterumapuguba.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/ingersoll_rand_231c_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56e6e1a0-5e95-4076-82c6-91babc3360a6/devidesopiniveximixi.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/lifevobefawenilonukoba.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_off0001f91e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F91E 4952 bytes
SHA-256: 08ff076ad491e0ae4a26868aecd6049e13eca4b32779487cecb0d8a6671b68ef
font_01_sfnt_off000209d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x209D9 12244 bytes
SHA-256: 91201036d8c96c941befe05937db212fce9d19a132d63ebe2bfb93fcd1ef0461
font_02_sfnt_off000230c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x230C2 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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