Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b2c9d9b32603bb…

MALICIOUS

PDF

95.7 KB Created: 2020-12-17 21:46:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: eacfee9985f12130ee2a48a2eada179f SHA-1: 2d88385c826c634c811857e5a32210a125f922b8 SHA-256: 45b2c9d9b32603bb661fb569bbe3f34d41b6efcb571d9b9bbd32fa32db624e47
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The embedded URL leads to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. No scripts were extracted, but the PDF structure itself contains malicious indicators.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://trafftec.ru/strik?utm_term=chfi+study+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4493227/normal_5fbd6a4648263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_5fc02266c01c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405459/normal_5faa8a3d43def.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477409/normal_5fced402e5ed8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376359/normal_5fa8224523f1e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/28501e02-bb82-4760-84ca-cdc37e197093/22855267709.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/256f1f86-8c8d-49ee-a2fb-95cdd8f08951/liwesozedewizakijudowal.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50833d49dd124474ed35a/t/5fd72f695488895576c5c82e/1607937897997/40652854722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/135a42c6-137b-4c96-ac95-f9d02181d459/bogan_tamil_movie_hd_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/90521795396.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001312e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1312E 4836 bytes
SHA-256: 04c71902bebd32bb6f4c6c8e0e649e9bbafa896d02034b33db3b06d28294334d
font_01_sfnt_off000141ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141AB 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off00014d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D0E 10352 bytes
SHA-256: 3ba7d0dcdf99c27a4a185859886616d4cab2c94e8ee360dbc68991aee59b26d8