Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6d818986c356902…

MALICIOUS

PDF

74.4 KB Created: 2020-11-25 19:06:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0a5e016f5b65f547916ccb5b8e21570 SHA-1: d5ca3337405dff6d6fc5aa005ab70806c377c28d SHA-256: e6d818986c3569020b2711643661ba1358ba0b84c9681b17b6f49c5a582b70e3
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'. This indicates an attempt to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, and ClamAV detected it as a phishing trojan. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=android+studio+image+asset+png
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f8eb11d2f32d.pdf
    • https://cdn-cms.f-static.net/uploads/4426087/normal_5fbb3536dd6ee.pdf
    • https://cdn-cms.f-static.net/uploads/4387218/normal_5fae0ae2bf235.pdf
    • https://cdn-cms.f-static.net/uploads/4482880/normal_5fb7336570fee.pdf
    • https://cdn-cms.f-static.net/uploads/4418167/normal_5f98fcf304107.pdf
    • https://cdn-cms.f-static.net/uploads/4461523/normal_5fb6ea1cbde62.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dbb94fe6-9808-4ef1-b3b1-a691e54d9ca0/target_field_seating_chart_with_rows.pdf
    • https://s3.amazonaws.com/sazariwapa/arab_israeli_conflict_timeline_worksheet.pdf
    • https://s3.amazonaws.com/fikuvine/23515181601.pdf
    • https://uploads.strikinglycdn.com/files/303f0aad-7479-4ffe-a801-929432575c05/mazazarawulagusimegisovur.pdf
    • https://s3.amazonaws.com/sirasu/19486954926.pdf
    • https://s3.amazonaws.com/wapabefizosumi/android_bindservice_sample.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e56e.bin
8e9211064de84d97e60c5f7b93d32612d9d4442627a337cad0a593e54d103f3d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE56E 5236 bytes
font_01_sfnt_off0000f723.bin
3022033f2b45cbfda9e9165748184a8ba597e520f991ffca3b1ed94a05cc10f5
pdf-font-stream PDF embedded font (sfnt) at offset 0xF723 11084 bytes