PDF malware analysis — malicious · cfac56c8485d7103

MALICIOUS

PDF

75.2 KB Created: 2020-12-27 03:52:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07

MD5: 6fa1cc207fc88fadcc3ad9a897d6cad6 SHA-1: 493fc243ad51166333bd66bef8a53c90db8cc112 SHA-256: cfac56c8485d71033ec3fb3e23dc4f4b7bf788f0ccea61c94e5d24c53fb2131d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic firing for an external URI pointing to 'trafftec.ru', which is suspicious. The ML classifier and ClamAV also flagged this file as malicious, specifically as a phishing trojan. Although no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to redirect the user to a phishing or malware distribution site.

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://trafftec.ru/aws?utm_term=tanzanian+bongo+movie PDF link annotation
- https://cdn.sqhk.co/wememiguw/fjjjhhc/sniper_zombie_apocalypse_pixel_shooter_gratis.pdfIn PDF document text
- https://cdn.sqhk.co/lilapanorup/UyxznGJ/latin_america_empire_2027_mod_apk_unlimited_money.pdfIn PDF document text
- https://cdn.sqhk.co/tipefimex/zRhCdib/4903599244.pdfIn PDF document text
- https://cdn.sqhk.co/pimibopugugo/ngdne3k/clash_royale_clan_wars_2_deck_cooldown.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/e16bfac7-e956-436b-ad53-7bbf6b814f56/87259116146.pdfIn PDF document text
- https://s3.amazonaws.com/fajujiju/bharatiya_vidya_bhavan_astrology_software.pdfIn PDF document text
- https://s3.amazonaws.com/vikukinumet/pewororoj.pdfIn PDF document text
- https://s3.amazonaws.com/wudibirewuduto/19690939535.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/428acb22-dfbb-441a-aa57-bff8ec067a96/xafeleditulunopi.pdfIn PDF document text
- https://s3.amazonaws.com/bikikanafopavu/make_your_own_handwriting_practice_worksheets.pdfIn PDF document text
- https://s3.amazonaws.com/sesafefanulokam/13408840784.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ebf4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEBF4	4900 bytes
SHA-256: `c0f79e99e4a8f8326996ce1fc4280d14785a1468d0ffb6ab4cc7ca49ebe9c79e`
`font_01_sfnt_off0000fca9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCA9	10420 bytes
SHA-256: `7f9c1b88f450917292e2152f652d6120450f8845a1b75798c7cfa4fba1750836`

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