PDF malware analysis — malicious · 343f3cb857e04fdb

MALICIOUS

PDF

86.1 KB Created: 2021-01-16 09:14:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 4bc249ddb24a3f7edfa8140c26562124 SHA-1: d0bf70e7aca7869cd7422ea689476f5e41dc55cd SHA-256: 343f3cb857e04fdbbed654975356882bf35bd8de8eb2d9891c2a07fb5e2447e0

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, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafffi.ru', suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which is often used to redirect users to malicious sites or exploit vulnerabilities.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/123?utm_term=the+science+of+logic+coffey PDF link annotation
- https://cdn.sqhk.co/kifuzopeko/ifzhjha/84352609353.pdfIn PDF document text
- https://site-1225538.mozfiles.com/files/1225538/lubefigejeziju.pdfIn PDF document text
- https://cdn.sqhk.co/febenapox/Ujegijc/codigo_procesal_penal_de_guatemala_actualizado_2019.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408583/normal_5f997b70ddaf8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381551/normal_5fd1f266ab06a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4458625/normal_5ff4eded09be7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393356/normal_5fa712d59191e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382408/normal_5fe9aa59782b6.pdfIn PDF document text
- https://site-1178214.mozfiles.com/files/1178214/farkle_dice_game_amazon.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4459185/normal_6000407a70e25.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/takateg/powabapupirebujudade.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_off00011539.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11539	4888 bytes
SHA-256: `191fc2b89cf1b4082de577283167db6777f7bb5d1d9467af73d2ac7ef489dbba`
`font_01_sfnt_off000125f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x125F2	11328 bytes
SHA-256: `aa45d918360abadcb2a427c9dcee03ebcaf3ac1e1f19fca3a5346a2ebac66599`

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