PDF malware analysis — malicious · f146a776b7649e6a

MALICIOUS

PDF

80.7 KB Created: 2020-12-24 08:39:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: a7d43e1e32ea24fb084e6df2b3671eb1 SHA-1: 8d9666db9223d6ebce432d29dc07b4c92f1186df SHA-256: f146a776b7649e6a34ba7e31ef518c1d0b8d3b910c4bae81ef4fde14d21c2947

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI that redirects to a malicious domain, likely intended to trick the user into downloading further malware or visiting a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, and the presence of an external URI points to a phishing or credential harvesting attempt. No scripts were extracted, but the PDF structure itself facilitated the malicious redirection.

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://traffnew.ru/123?utm_term=happy+thanksgiving+images+animated PDF link annotation
- https://cdn.sqhk.co/fumazuri/dyhjrih/snipers_vs_thieves_wiki.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368497/normal_5f89013a94f1c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452852/normal_5fc02ca62312b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449777/normal_5fa1022a8d0d4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366398/normal_5fd7d07a81ced.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388427/normal_5f9080f39d971.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/sukobogixe/codehs_snowman_answers.pdfIn PDF document text
- https://s3.amazonaws.com/felasorarabipis/95631071610.pdfIn PDF document text
- https://s3.amazonaws.com/dabatisew/is_drinking_a_potion_a_bonus_action_5e.pdfIn PDF document text
- https://s3.amazonaws.com/tojazudibumogab/pebulumin.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/39136826133.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_off0000fef8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFEF8	5432 bytes
SHA-256: `e7682afa3827cc2fd41a94322a3809f79e3602c23a2905733e024a3047de7fd2`
`font_01_sfnt_off00011159.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11159	10636 bytes
SHA-256: `ce00db7bfa62f736ec3e5869bf5988c5310968f3ef30cfa6263a6e11fc37e33b`

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