PDF malware analysis — malicious · 41104e885b098094

MALICIOUS

PDF

65.9 KB Created: 2021-01-12 05:57:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 9e228602222bf3da7eaa8ed4b2996119 SHA-1: edb0371ad6a12e58b71647646fc5cc7da7d12bed SHA-256: 41104e885b098094596f14997ddb34372358598528faa4741ccde374c492e389

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of an external URI. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URI strongly suggest an attempt to redirect the user to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://trafffi.ru/123?utm_term=liespotting+pdf+portugues PDF link annotation
- https://site-1221172.mozfiles.com/files/1221172/diy_repurposed_furniture_ideas_pinterest.pdfIn PDF document text
- https://site-1174957.mozfiles.com/files/1174957/strategic_planning_process_defined.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4402718/normal_5fe0d12a04018.pdfIn PDF document text
- https://cdn.sqhk.co/difanemifal/56ghhdM/gutscheine_media_markt_online.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4368487/normal_5fcff1d5193f1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454545/normal_5fa866d9d4bce.pdfIn PDF document text
- https://cdn.sqhk.co/jagapifa/ge4SKjh/stack_ball_game_free_download_apk.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4451221/normal_5fbe73fd8909d.pdfIn PDF document text
- https://site-1174864.mozfiles.com/files/1174864/homemade_vanilla_ice_cream_made_with_almond_milk.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4416790/normal_5ff96d8da43f7.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c446.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC446	4908 bytes
SHA-256: `76e4a5aa7fda1e0390a24bfee3ea9327f8fa3b8d6ac228813781092ff3334194`
`font_01_sfnt_off0000d514.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD514	12192 bytes
SHA-256: `38b445209f335ba8ffdea87d540e81eafa38a3687fd4bc37604e7a23184606bb`

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