Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e32e1cfe9c0eb67…

MALICIOUS

PDF

79.5 KB Created: 2021-03-14 06:34:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a00cdcf432e87111fffb7556bc1bf81 SHA-1: bc08367da71e5ba3dc8e62d575efa459790eec98 SHA-256: 0e32e1cfe9c0eb6735387bcb91b58e7ff8ccb0b420652319e86f3a90ec019890
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 critical heuristic firing for PDF_MALICIOUS. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a book PDF, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/strik?utm_term=where+do+we+come+from+book+pdf
    • https://cdn-cms.f-static.net/uploads/4375696/normal_603d807db2a85.pdf
    • https://cdn-cms.f-static.net/uploads/4447107/normal_6024ac10af80b.pdf
    • https://static.s123-cdn-static.com/uploads/4420240/normal_5fc90a93e1f4b.pdf
    • https://cdn-cms.f-static.net/uploads/4367665/normal_601bb02ecca1a.pdf
    • http://daimontimur.org/gekojadewiri6p8bv.pdf
    • http://storergoods.site/67759670012l2jwb.pdf
    • http://itslm.fun/59062909575qoxxy.pdf
    • http://ppl-nutrshopfit.website/161664993964w7lt.pdf
    • http://intereriia.com/drinkwell_pet_fountain_cleaning_kity159c.pdf
    • https://cdn-cms.f-static.net/uploads/4477886/normal_604ce5cc01625.pdf
    • https://cdn-cms.f-static.net/uploads/4454180/normal_6020798f8897e.pdf
    • https://static.s123-cdn-static.com/uploads/4460076/normal_60069c770d2d4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ea9f8a59-1c14-480a-95e7-3edd478f28aa/55688973740.pdf
    • http://tijiwef.epizy.com/runozalojazi.pdf
    • http://vuremekewema.rf.gd/jumewitaxetodawulevep.pdf
    • http://ziwilud.epizy.com/1814335928.pdf
    • https://uploads.strikinglycdn.com/files/c13857f2-b1e9-466d-a8bd-d2238758f741/sat_test_dates_2020_hillsborough_county.pdf
    • https://uploads.strikinglycdn.com/files/1e55de1c-9f4c-4d4f-b9bd-4391f35625c0/kuvaxajukogafapesobizil.pdf
    • https://uploads.strikinglycdn.com/files/c5c58c1d-574e-4a05-9998-4382bd2a737e/gedavufuxud.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.

FilenameKindSourceSize
font_00_sfnt_off0000f627.bin
8a636dc904044af3b145755859da56b3a3ebf26a27458e8a1093058e80958185
pdf-font-stream PDF embedded font (sfnt) at offset 0xF627 5284 bytes
font_01_sfnt_off00010811.bin
a7ef6043891a8b1fea4c202a20885360b36bfda7f8a3863979915f2f77ecd447
pdf-font-stream PDF embedded font (sfnt) at offset 0x10811 12024 bytes