Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfeaee70a5b0502a…

MALICIOUS

PDF

82.1 KB Created: 2020-11-14 19:54:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6aa53f9a7f2e9b71969dcde1048ed262 SHA-1: 14218c66b8f6c1ecad6c9162bdcf3c29e043863b SHA-256: dfeaee70a5b0502aee951de53ee36303135b5713390568fc7f01a5520fb5a9f9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a website offering a Skyrim mod download, which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect the user to a malicious site, likely for further exploitation.

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://traffset.ru/123?utm_term=skyrim+random+ctd+fix+mod
    • https://cdn-cms.f-static.net/uploads/4407724/normal_5f926d70c9255.pdf
    • https://cdn-cms.f-static.net/uploads/4379723/normal_5f92a937d10fb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ea29e9bc-5d27-474a-86ba-67d199f61b69/14271477714.pdf
    • https://uploads.strikinglycdn.com/files/2ec177b6-aa80-4743-b127-b364da5418c1/3260988269.pdf
    • https://uploads.strikinglycdn.com/files/8e6a51a6-4503-411a-8386-a006eb51d727/26001306992.pdf
    • https://uploads.strikinglycdn.com/files/4b458cbd-f4b1-4c6f-8f41-b2eeec3377db/kuxub.pdf
    • https://uploads.strikinglycdn.com/files/dc00f4f9-1e68-43cf-a0f2-93a46e8518c2/que_son_los_nexos_coordinantes.pdf
    • https://s3.amazonaws.com/tevigotu/endless_sleep_wiki.pdf
    • https://uploads.strikinglycdn.com/files/e0f6e87d-3cba-4c77-ba0e-13aff6b19d7b/beginudedojetijujejidebe.pdf
    • https://uploads.strikinglycdn.com/files/d15118d1-fe4a-4928-9fb3-87aa6351d608/79246140965.pdf
    • https://uploads.strikinglycdn.com/files/9178a83f-0544-4685-809e-c394812d8c22/64284564263.pdf
    • https://uploads.strikinglycdn.com/files/ebce9ab8-f1af-4b3b-b731-fa7306a9f9a6/fetomiriterovexegabab.pdf
    • https://uploads.strikinglycdn.com/files/76a17052-b4bc-4020-93b7-23b268292828/fuwasabekejisosajoxigenof.pdf
    • https://uploads.strikinglycdn.com/files/50186983-761a-4647-99f1-4126d594f1d8/99399598589.pdf
    • https://uploads.strikinglycdn.com/files/52d74a4b-eb53-4be9-a640-999cb5b4137f/lomene.pdf
    • https://uploads.strikinglycdn.com/files/d5bb5754-e90e-40c1-9671-5e4667c5501e/43426727606.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_off000100bc.bin
34d0f6908ab8e96ef6f14ef69c044d123f11eb9fc4883f22a790040b5830b2a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x100BC 5292 bytes
font_01_sfnt_off000112b7.bin
7ef0f8ee50f1db8ea96eaac6fdd7e99a52f87475024b5f9569cf772f3d377810
pdf-font-stream PDF embedded font (sfnt) at offset 0x112B7 12472 bytes