PDF malware analysis — malicious · b9e2305350523f98

MALICIOUS

PDF

78.6 KB Created: 2021-02-27 06:23:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10

MD5: b4aacdd8c10eef0de62baade85da7922 SHA-1: 378a3629edfb17206726e99ba24b600ac66f407f SHA-256: b9e2305350523f986faa8b3bba7c960d504b89e4c5a93f8804811d6bba9289ab

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a phishing lure for an 'infinite massage portal'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

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://nipisod.ru/wix?keyword=infinite+massage+portal PDF link annotation
- http://sowopezamiw.medianewsonline.com/nopekomepodevekudoxavag.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447460/normal_5fe00ac6c4cb0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4488315/normal_5ff26843ecf7f.pdfIn PDF document text
- http://sevagawos.getenjoyment.net/sirew.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4443578/normal_5feb40b8d08ef.pdfIn PDF document text
- http://tufodudem.mypressonline.com/what_is_the_best_call_blocker_app_for_iphone.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4453115/normal_601ba8067b06a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4420250/normal_5ffbda0514d9b.pdfIn PDF document text
- http://jivusibofonefud.mygamesonline.org/how_to_work_a_dsc_alarm_system.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454042/normal_5fd8e8886c865.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/julaxel/wuwukunofokenowezedixaz.pdfIn PDF document text
- https://s3.amazonaws.com/zafirawit/40855291399.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_off0000ed06.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED06	5160 bytes
SHA-256: `ee7e3f4e95a0d2fd5a51ccff4fce47a0fe44f258eb74db8bcdf41075dc077116`
`font_01_sfnt_off0000fe80.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE80	15340 bytes
SHA-256: `d6c6f51f8ed2b1ee487712f3223bbc9e0dd4be2be82248ff57f4ad885a494a22`

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