PDF malware analysis — malicious · d78e5b0033ef171b

MALICIOUS

PDF

59.4 KB Created: 2020-11-24 00:24:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 13f82c261405e55bc790325e97f8a03c SHA-1: 1a9d837481746fe43831b00f01b5c68c4d9b8702 SHA-256: d78e5b0033ef171b5e7135610761ee3c73c6d5903f75bc2dabeda7695ca04528

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 'traffking.ru', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body is heavily obfuscated and appears to contain metadata related to 'wkhtmltopdf', suggesting it may have been generated programmatically to obscure its malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://traffking.ru/strik?utm_term=conan+exiles+sand+beast+bile+gland
- https://cdn-cms.f-static.net/uploads/4404964/normal_5fa86e2a45629.pdf
- https://cdn-cms.f-static.net/uploads/4413590/normal_5f9443c3e185e.pdf
- https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/rozebejakoraxema.pdf
- https://cdn-cms.f-static.net/uploads/4366324/normal_5f95a4285d757.pdf
- https://cdn-cms.f-static.net/uploads/4367916/normal_5f8b625b561fd.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/1ecc77e0-cc81-4e40-8a1a-03c98703334f/zosijifurejumej.pdf
- https://s3.amazonaws.com/zategafozasiru/84666711199.pdf
- https://s3.amazonaws.com/lekizopiloref/at-6_texan_rc.pdf
- https://uploads.strikinglycdn.com/files/f3e49a60-2266-4b7c-bc59-4cff305d169f/80561220564.pdf
- https://uploads.strikinglycdn.com/files/f362b88f-4bef-40f1-8d35-04e9a2e9f200/35907370027.pdf
- https://uploads.strikinglycdn.com/files/332e4f88-d029-4884-829d-2bdea05fcd28/oath_of_conquest_paladin.pdf
- https://uploads.strikinglycdn.com/files/8b855fe7-76a5-4e21-8063-1ffb5a7b632b/a_widows_guide_to_healing_book_amazon.pdf
- https://uploads.strikinglycdn.com/files/6746e0b8-7979-4d95-b6cc-1755d28eca71/60627499794.pdf
- https://uploads.strikinglycdn.com/files/3b391f05-a291-4b21-b935-e0db8454940a/69300864361.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_off0000ae44.bin` `2ff8217b28c80c40534d5368dc0247a22acbb4414c87076c15a92c73ed3eeeb4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAE44	5012 bytes
`font_01_sfnt_off0000bf5d.bin` `09dcb9dd7ffa37201ea9cc5c6bdea8403f69207bc453219d63a91b9c312fcfef`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBF5D	9812 bytes

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