PDF malware analysis — malicious · 071d4c5825d87a8e

MALICIOUS

PDF

75.3 KB Created: 2020-12-27 06:56:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 0563bef9ec53af15b651f50cd400f9b1 SHA-1: 154010bbf07900796f49c8bb754956f0c5a61747 SHA-256: 071d4c5825d87a8e819452d815e78e26008ecee5f322dbf49dd4a6ecd293c730

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The embedded URL points to a domain that is likely used for malicious redirection, disguised as a search result for 'couple halloween costumes ideas'. No scripts were extracted, but the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=couple+halloween+costumes+ideas PDF link annotation
- https://cdn-cms.f-static.net/uploads/4379618/normal_5fb2e212b81c1.pdfIn PDF document text
- https://dizuxegukus.weebly.com/uploads/1/3/4/6/134624336/lufog.pdfIn PDF document text
- https://cdn.sqhk.co/nopawuwam/jeKAjdD/80459144768.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421048/normal_5fa70b861d25f.pdfIn PDF document text
- https://seriraradekabas.weebly.com/uploads/1/3/4/0/134016679/77072bb3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387825/normal_5f972dafb4f40.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375355/normal_5fd2a67719e32.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378167/normal_5f94639c5bc7a.pdfIn PDF document text
- https://cdn.sqhk.co/xulawajikigi/S4e3PMg/yandex_browser_free_download.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/zabejuvijolu/tuxelutegikigemoduwiwume.pdfIn PDF document text
- https://s3.amazonaws.com/pipaneku/mozodunobagej.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_off0000e87f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE87F	5216 bytes
SHA-256: `048dfbedb80dd0bd78be426bfdf5f0bb9168d8d9ada750f7437e7fc2842b288d`
`font_01_sfnt_off0000fa21.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA21	11292 bytes
SHA-256: `6e846cbb756d5d6f9bfe7c5f8707f7a622f49bee957284aa8de8f8fc3a9071b8`

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