PDF malware analysis — malicious · 6d74bb2ebd97cbcb

MALICIOUS

PDF

72.0 KB Created: 2020-12-23 09:56:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f3769799d65d6f515b3b7f4825928755 SHA-1: 63592a851548b10813a471944a49fe6afb700a2c SHA-256: 6d74bb2ebd97cbcbc447fd9a78c2de6a617f779ed316cef0d57e8a80e875ab26

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, many of which are dynamically generated, suggesting a link farm or SEO poisoning attempt. The primary URL points to a suspicious domain, and ClamAV detected it as a phishing trojan. The document body, though heavily obfuscated, appears to be related to search terms, reinforcing the phishing lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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=hotel+near+chatuchak+weekend+market+bangkok
- https://cdn-cms.f-static.net/uploads/4367951/normal_5f87b47ec98b1.pdf
- https://voziguwotameba.weebly.com/uploads/1/3/4/3/134345279/ffc40040a9e2.pdf
- https://damilezudof.weebly.com/uploads/1/3/4/5/134599741/182640.pdf
- https://napemoxirakula.weebly.com/uploads/1/3/4/6/134682748/bc39aee5266cd28.pdf
- https://biziliwedurukax.weebly.com/uploads/1/3/4/8/134889104/1f06fcde35b.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/jevopemosod/jafexilavugekitupa.pdf
- https://s3.amazonaws.com/fukepez/webexaturufovotikinali.pdf
- https://s3.amazonaws.com/pokixovuxik/mobile_score_app.pdf
- https://uploads.strikinglycdn.com/files/5734d412-1465-4b81-b3d7-1a8bb232c7ab/lakes_of_fire_michigan.pdf
- https://static1.squarespace.com/static/5fdc7d305fcdb718a17c69c1/t/5fdcf1a15f530d766ab9a9f9/1608315298430/nekedapuk.pdf
- https://static1.squarespace.com/static/5fc021705e8e827d4289a3fa/t/5fc20a9b7acac6192a0801bb/1606552219970/berilotowebozeloxow.pdf
- https://s3.amazonaws.com/tezofuretejom/jojejosud.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_off0000dc3d.bin` `92bee65466942db78e32f8be513261398639cf96cdb84bb74c8889a6c82754f6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC3D	5432 bytes
`font_01_sfnt_off0000ee95.bin` `119eb265f2d286e9095929a5517975686238eadf52b4c52ce0e39647bdd3f8be`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE95	10664 bytes

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