Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e9cd4e28ceeb582…

MALICIOUS

PDF

76.9 KB Created: 2020-11-25 06:00:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 341b261b540a96d12a23c54d4f6ba3a4 SHA-1: 5947da252592ca4344f7ebb07e528955315edd03 SHA-256: 0e9cd4e28ceeb5821978c9db0f9e9c08d9c23bd77f9bc1e6aaee576bd8882b48
154 Risk Score

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 'ggtraff.ru'. ML classification and ClamAV also flagged this file as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests it's likely used to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=jin+ping+mei+pdf+italiano
    • https://cdn-cms.f-static.net/uploads/4373985/normal_5fb3333c82270.pdf
    • https://cdn-cms.f-static.net/uploads/4482636/normal_5fa6b60d1338f.pdf
    • https://cdn-cms.f-static.net/uploads/4382771/normal_5f99db8212cec.pdf
    • https://cdn-cms.f-static.net/uploads/4402948/normal_5fa4ffec7225e.pdf
    • https://cdn-cms.f-static.net/uploads/4383334/normal_5f8dd37146807.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/sorogamat/48567010326.pdf
    • https://uploads.strikinglycdn.com/files/71e374d0-bbcb-4e7c-a38f-f137d1ac135d/83804697821.pdf
    • https://s3.amazonaws.com/vedexajawo/dr_fate_dc_stargirl.pdf
    • https://s3.amazonaws.com/falufusu/vodasolaguwuwipoketevoli.pdf
    • https://uploads.strikinglycdn.com/files/1f9d63c0-db90-4ca3-89e3-c4e61faddc4c/51413112395.pdf
    • https://s3.amazonaws.com/pazifetanegapu/54153328514.pdf
    • https://uploads.strikinglycdn.com/files/4166152a-98eb-4d8c-b662-b60512cc09dc/philadelphia_inquirer_death_notices_obituaries.pdf
    • https://uploads.strikinglycdn.com/files/3976eaa3-8862-465f-8cfc-703549dccbb8/xe_sv_project_8.pdf
    • https://s3.amazonaws.com/zugutixe/mujiz.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4c7.bin
443f089dd84cc84297733fb1a1640a6b3ffefe83ceb9129c1e3d432dcd878a1d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C7 3556 bytes
font_01_sfnt_off0000e167.bin
1b8d8a55f6f5b365a4132d761308ee57250e12c945f06078f39207120560397b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE167 4864 bytes
font_02_sfnt_off0000f1d2.bin
c9cc3d3f8e62b06f9fbca29285a309c5e8c2ac4786e2b4257330bffeddb7a148
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D2 10888 bytes
font_03_sfnt_off0001167b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x1167B 4324 bytes