PDF malware analysis — malicious · 6c9cbec39927f540

MALICIOUS

PDF

81.4 KB Created: 2021-03-13 21:36:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8f64840dfe68f75a45438fa06ec8188f SHA-1: 1d6c4315d6e69ff4e86643b66914b92b53b1caca SHA-256: 6c9cbec39927f540322b19fea2c3ea1102bc4769d95d943841fc613eb6c4fff1

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into clicking it. The document body, though heavily obfuscated, contains keywords related to the URL, suggesting a phishing or scam attempt.

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://nipisod.ru/award?keyword=aprendizaje+visual+caracteristicas+pdf
- https://cdn-cms.f-static.net/uploads/4428341/normal_603c76fe447b2.pdf
- https://cdn-cms.f-static.net/uploads/4390056/normal_6018c809efbd1.pdf
- https://cdn-cms.f-static.net/uploads/4401540/normal_602785e71ad4a.pdf
- https://static.s123-cdn-static.com/uploads/4379968/normal_5ffdb400dd2c6.pdf
- http://pirikulifiwitif.iblogger.org/tixufokoxadubosipul.pdf
- http://xalufabo.iblogger.org/affiliate_website_templates_free.pdf
- https://cdn-cms.f-static.net/uploads/4427811/normal_604b01975493c.pdf
- http://dektesheff.xyz/40438927900relvs.pdf
- https://cdn-cms.f-static.net/uploads/4420238/normal_60346e42d8aee.pdf
- https://cdn-cms.f-static.net/uploads/4463298/normal_6036cd2eca502.pdf
- http://helpforteam.com/addicted_to_you_piano_sheet_musicx2311.pdf
- https://static.s123-cdn-static.com/uploads/4493578/normal_5ffc587a18265.pdf
- http://xunajoza.22web.org/offline_medical_dictionary_free_for_android.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://biwoxurovoke.rf.gd/41870857803.pdf
- https://uploads.strikinglycdn.com/files/e8f3c525-89e0-45d9-8453-9e6325112558/kutedij.pdf
- https://s3.amazonaws.com/vovabagubajegeb/fowopobaju.pdf
- https://uploads.strikinglycdn.com/files/72bee367-17fd-4093-8203-791f5d9376cc/81116737969.pdf
- https://s3.amazonaws.com/farefasejikap/perowexefalexevokefivuju.pdf
- https://s3.amazonaws.com/libowebujakux/48668961394.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000fe0d.bin` `f4ab0506042a76f114b0456ae0415f745a2c85edb891b2115acd160f9d52fb16`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE0D	5324 bytes
`font_01_sfnt_off0001104f.bin` `244e5c4b1e818b951ef6292f0c36378a5184d5f55f9b13a2758ec7717311d36e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1104F	11964 bytes

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