PDF malware analysis — malicious · a56bd8799fb4a449

MALICIOUS

PDF

70.7 KB Created: 2020-11-30 17:54:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 70d97fd2a83eff019e2e45a55dbe5014 SHA-1: 11d49bf350dd7f231cbe358635197c0c8796c582 SHA-256: a56bd8799fb4a449dac65148f2218a6e5aed14edaf49f20e75463880ae41ff97

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic indicating an external URI, specifically 'https://traffnew.ru/123?utm_term=culture+of+poverty+theory+criticism'. The document body, though heavily obfuscated, contains text related to 'Culture of poverty theory criticism' and authoring information suggesting it was generated by wkhtmltopdf. ClamAV detection and ML classification strongly indicate maliciousness, likely a phishing attempt to direct users to the identified URL.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?utm_term=culture+of+poverty+theory+criticism
- https://cdn-cms.f-static.net/uploads/4424036/normal_5fa60cfda3755.pdf
- https://cdn-cms.f-static.net/uploads/4420612/normal_5fbcc94d7646a.pdf
- https://cdn-cms.f-static.net/uploads/4462350/normal_5fa8c0b8c3751.pdf
- https://cdn-cms.f-static.net/uploads/4403557/normal_5fa39d48208be.pdf
- https://wigemixez.weebly.com/uploads/1/3/4/2/134265991/4799437.pdf
- https://cdn-cms.f-static.net/uploads/4390055/normal_5f9014f8d8fa5.pdf
- https://cdn-cms.f-static.net/uploads/4482619/normal_5fad9b7d1a088.pdf
- https://static.s123-cdn-static.com/uploads/4468274/normal_5fc48c2639b94.pdf
- https://zovavofesaduj.weebly.com/uploads/1/3/4/7/134770402/fbbc30b.pdf
- https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/xubuwaziroralu_nigazubika.pdf
- https://cdn-cms.f-static.net/uploads/4367290/normal_5f89dfe3669b6.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://uploads.strikinglycdn.com/files/660355ca-950f-4cfd-a76e-c3b59f0cb78a/11565892411.pdf
- https://uploads.strikinglycdn.com/files/05a62710-4053-4727-9c2b-34a0a807a26c/kozojevaxevozolejewaxazo.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_off0000c9bc.bin` `ca9feda5c0c12d12808ab37430cb44e2ec26c9b7b8b3d33d0d87550c5b1be373`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC9BC	5008 bytes
`font_01_sfnt_off0000dae5.bin` `624466be93627ae936bd426336279db3f0c1b01979cc7cb946e5505739373316`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDAE5	11044 bytes
`font_02_sfnt_off0000ffd0.bin` `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFD0	4324 bytes

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