PDF malware analysis — malicious · 9b7ef4760d4f20f9

MALICIOUS

PDF

67.8 KB Created: 2020-11-18 07:18:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6f62b3808200fe6a42ba4e633727df3d SHA-1: e8ef3a8cab3ed6e288674f14ab9019510b236091 SHA-256: 9b7ef4760d4f20f99ac24750cf3614a6320c8a111e7c6dc58e4dc2a940893e06

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ggtraff.ru', which is also listed as an IOC. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a malicious URL suggests the document is designed to redirect users to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=computer+shortcuts+crossword+puzzle
- https://cdn-cms.f-static.net/uploads/4470521/normal_5faa47005ab41.pdf
- https://cdn-cms.f-static.net/uploads/4484639/normal_5fb26343cf244.pdf
- https://cdn-cms.f-static.net/uploads/4369768/normal_5f886b69d79fe.pdf
- https://cdn-cms.f-static.net/uploads/4368474/normal_5fa284c8db8c5.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/sugaguxagu/aswath_damodaran_corporate_finance.pdf
- https://s3.amazonaws.com/tejuvonixag/7223035890.pdf
- https://s3.amazonaws.com/fomaralunex/96597173357.pdf
- https://s3.amazonaws.com/muvevanepen/62350947438.pdf
- https://s3.amazonaws.com/leguvefu/dinepiminexawozenu.pdf
- https://s3.amazonaws.com/fapaga/57150398281.pdf
- https://uploads.strikinglycdn.com/files/ca2d4679-3fa8-42d3-b64c-0d0a5c812c7f/mevaloxavu.pdf
- https://uploads.strikinglycdn.com/files/519b8092-c91e-4d41-937a-7ca851a0ca2a/wemanegobo.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c106.bin` `62ff4e58f883e74ce5c0b98f2df35e2c103b22f27329c036f1a9ac2948c2b868`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC106	4996 bytes
`font_01_sfnt_off0000d229.bin` `7e9917cedbb1dbf409ab3775b34fa91fbee93b5de788f0843fcc9d49b92eb687`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD229	9964 bytes
`font_02_sfnt_off0000f45b.bin` `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF45B	4324 bytes

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