Malicious PDF — malware analysis report

Static analysis result for SHA-256 89064627518ce378…

MALICIOUS

PDF

64.6 KB Created: 2020-11-18 23:27:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 17005a54bc9fe6534950028233a676b8 SHA-1: d4f6f64151cd2e696ac30e1e5649f064427f1517 SHA-256: 89064627518ce3784b1817282bbb1fb01c0ab865cd15634f557773e155e3875a
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=caracters+sexuals+primaris In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f945b189f74f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456667/normal_5fa3bbd94d983.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f88359986146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369328/normal_5f943d3574832.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457014/normal_5fb2630fe9308.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/marketing_armstrong_13th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09684981-cf6f-47f8-8cef-e7cfae1d5960/64422439554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b5d84a0-a569-41e0-ae1f-5283e24f8a1f/figurative_language_activities_for_middle_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/926181cb-8a1c-4780-b0e9-7cb570e1c226/wugediwizesudedejagexorof.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/dokkan_battle_jp_apk_mod_4.8.3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19286f4e-5c4c-46a7-a0f1-e0d0ef451580/22050031208.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba9623b8-35d7-405c-85b6-43c3227af15f/26017860541.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_off0000c050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC050 5052 bytes
SHA-256: 3393427b818479d375cdc7d8187ee5bbd61cde2d1380187979ee48ca90b7eb30
font_01_sfnt_off0000d167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD167 11212 bytes
SHA-256: 9c6df4d9f44dfd12a222f86855ae3533b729f5d058f0e6a65aed8e58e32b6e1a