PDF malware analysis — malicious · 0e946f3579bfd1ea

MALICIOUS

PDF

74.2 KB Created: 2020-11-13 16:40:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3ed4ef65a89e48db303550d4d4467cf4 SHA-1: d6f8d69b1697e05b9dca88bbc9263de084a192a8 SHA-256: 0e946f3579bfd1eac1d256b42c6b557eab2c537e222b3aaf0b508f4d43caa261

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to PDF files, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. The document body, though heavily obfuscated, contains references to 'Pokemon insurgence move relearner' and authoring tool information, which are likely decoys to mask the malicious nature of the embedded links.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://traffine.ru/strik?utm_term=pokemon+insurgence+move+relearner
- https://cdn-cms.f-static.net/uploads/4389568/normal_5f95f34c8736c.pdf
- https://josadezabo.weebly.com/uploads/1/3/4/4/134490641/lexukuteximorir.pdf
- https://cdn-cms.f-static.net/uploads/4380699/normal_5f9ea08ea0d35.pdf
- https://cdn-cms.f-static.net/uploads/4407998/normal_5fa9c511245c3.pdf
- https://ziwavolenexajid.weebly.com/uploads/1/3/4/5/134503628/4904226.pdf
- https://fivilogavizizov.weebly.com/uploads/1/3/4/4/134446089/5409844.pdf
- https://cdn-cms.f-static.net/uploads/4385412/normal_5f9240ea9d2ad.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/xalexojaxipud/flight_game_unblocked_66.pdf
- https://s3.amazonaws.com/fifomi/sylacauga_high_school_al_library.pdf
- https://uploads.strikinglycdn.com/files/7a7ab912-a4af-4f8b-bdcd-3bbd2ec1fa8a/essentials_of_understanding_psychology.pdf
- https://uploads.strikinglycdn.com/files/2c53b30b-8f11-44e6-99f6-7d12c33c2c08/35607167718.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e43a.bin` `466a8f99dbdfa51ec1a333347c68c27ead8131f0c73b55b7448ec9273e993c8a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE43A	5244 bytes
`font_01_sfnt_off0000f60b.bin` `10921c8ea7c5f82927836a69727f4a126661412c3ebbd1dffedf9c199634215f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF60B	11112 bytes

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