PDF malware analysis — malicious · 8e7a756a47cc619b

MALICIOUS

PDF

74.1 KB Created: 2020-12-29 12:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 67bdd1327db12587678282aa98f02e09 SHA-1: 767593db0796dfb0e867f3c51167abe22a2f2bdb SHA-256: 8e7a756a47cc619b03864d64dbeb9d523e320ed5fc9fbc0bdec69d62d593cf0d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafftec.ru/strik', which is likely a malicious domain used for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to a 'zombie hospital game', suggesting a lure to entice users to click the malicious link.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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
External URI info PDF_URI

PDF contains an external URL action
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://trafftec.ru/strik?utm_term=zombie+hospital+game+for+free
- https://cdn-cms.f-static.net/uploads/4402481/normal_5fd3b25e0b304.pdf
- https://cdn-cms.f-static.net/uploads/4445868/normal_5fd68b7086883.pdf
- https://cdn-cms.f-static.net/uploads/4446016/normal_5fa1ef5bac3f4.pdf
- https://nagudunegotup.weebly.com/uploads/1/3/2/6/132681409/200186.pdf
- https://cdn.sqhk.co/fuzokikili/3wzKwjb/36619535809.pdf
- https://cdn-cms.f-static.net/uploads/4527164/normal_5fbbe4bc3e03c.pdf
- https://gikotibosad.weebly.com/uploads/1/3/4/3/134332820/xexin-tamakonuteruzuk-bekipudijupinoz-penamasaruxalen.pdf
- https://cdn-cms.f-static.net/uploads/4457843/normal_5fa9e31fb5ee4.pdf
- https://cdn.sqhk.co/saseponirifa/ibhbghg/73742357973.pdf
- https://cdn.sqhk.co/dujujema/cfiijgo/siren_head_sound_effect_roblox_id.pdf
- https://static.s123-cdn-static.com/uploads/4466172/normal_5fe48a9e35761.pdf
- https://cdn-cms.f-static.net/uploads/4460682/normal_5fc1ee8ba51bb.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/nitajosasa/fujikam_361_manual.pdf
- https://s3.amazonaws.com/zagubip/suxejikuxozoge.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_off0000d7d9.bin` `ef70548a0f579287dcefbfb6cc3f4481b6b31de2166e4e1f81f26a2edbce4d2d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD7D9	5092 bytes
`font_01_sfnt_off0000e924.bin` `4d77aa05e5fb0b75bcf4ba92e64e1d21123e1dc7b745b5e8eb16f46a2c7bf66f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE924	10576 bytes
`font_02_sfnt_off00010d59.bin` `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10D59	4324 bytes

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