Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1f79d5a0e423771…

MALICIOUS

PDF

76.7 KB Created: 2020-11-20 13:55:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5d7e87fee04654dbc48128e0ce9ff5b9 SHA-1: d6791ae7a8db88c38f213f588b49936f553e2880 SHA-256: f1f79d5a0e4237711ff8373665ab893b3e91da19e589551752e131bd849e4e4e
154 Risk Score

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 0.9997

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://ggtraff.ru/123?utm_term=gta+v+bunker+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370543/normal_5f8a57e615511.pdfIn PDF document text
    • https://mepafuxutare.weebly.com/uploads/1/3/4/6/134660934/5b8bf3948c1e.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/vinaruzipetaso.pdfIn PDF document text
    • https://komanibinepo.weebly.com/uploads/1/3/4/5/134588578/raxebobamube-rulon-kilulemuwujebab.pdfIn PDF document text
    • https://munuvatatopa.weebly.com/uploads/1/3/4/6/134686277/nomajofe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f0f30ae-bc52-4732-ab22-5c862a9b9987/tipaz.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/area_of_irregular_shapes_worksheet_grade_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a750b7e5-2a86-431f-b368-01f03ba15a0e/jasesironuriweneko.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/korepenasixogojimesas.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/23788127822.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD469 5076 bytes
SHA-256: e3375d0685384b0a68d566ffe526a49cb0b79b370cb998877e85a7679d48392c
font_01_sfnt_off0000e5c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C6 10856 bytes
SHA-256: 39690a77f816f673364583ea095e0f83d9da434c8892b9fffc26cd5fff870fab
font_02_sfnt_off00010ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE7 17812 bytes
SHA-256: accb3d93a535a83e5bbe33a10d96670e6d60eb34b77000f013665ca5fbb780f9