Malicious PDF — malware analysis report

Static analysis result for SHA-256 aec3575436ae26c7…

MALICIOUS

PDF

66.0 KB Created: 2020-12-22 01:00:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e6d2e0a49d4e868ebfe2371fe4541ae4 SHA-1: 90e646bc452c0d9c968f1dd28eecf73d8225dc36 SHA-256: aec3575436ae26c783ea5d8069bd7ba09fce0381c962ac120bfe8f7f0508f780
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 0.9996

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=red+hunting+hat+for+sale In PDF document text
    • https://retowukiri.weebly.com/uploads/1/3/4/5/134592720/tijupodewebojudupoka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5fca2576d97f6.pdfIn PDF document text
    • https://zabaparadasikid.weebly.com/uploads/1/3/4/3/134317604/galakipolaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447880/normal_5fab075f92264.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467601/normal_5fbce94112a65.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/funibopise-rafutaneg-nijagunax-reliwoga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490739/normal_5fbeeb24385cb.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/393e0c14-3e6c-427e-8ede-1b531d0e6922/facebook_friends_mapper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88e5ec95-8103-45d1-9b33-49fa26d36f61/colliding_continents_video_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b405161f8068bed02ab5/t/5fd0758f5ec17a4c66920586/1607497103829/fivonuj.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_off0000c026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC026 5176 bytes
SHA-256: 21fdb22174678ef8fed72c0c67c565b39392938e62f0ccc0f3d1f3ef63347505
font_01_sfnt_off0000d1c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C2 12568 bytes
SHA-256: 8cfc683e9832a8e76f08152a7f4228220817e1661aee840e3d3aaa533f605e34