Malicious PDF — malware analysis report

Static analysis result for SHA-256 fac7d7437ab00060…

MALICIOUS

PDF

65.5 KB Created: 2020-11-21 03:22:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2d4c3d5a0c82b406406416675e9dd20e SHA-1: 732e0cb4bb4f62b68fa9615186223ea27bc24360 SHA-256: fac7d7437ab00060592269e9754a4d198652c040fef6be8a049cba0bb3887c3c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as a phishing attempt. The document body, though heavily obfuscated, suggests a lure related to academic content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a compromised site for further exploitation or credential harvesting.

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://trafffe.ru/123?utm_term=anatomy+of+the+male+reproductive+system+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369505/normal_5f937b28999db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454665/normal_5fb668d9ddb20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f8815cd3aa90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390069/normal_5f8ec15e04ff3.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/9f495cfe-ddaa-42e8-82f3-246f4a382d0f/varulufuxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/495a8eff-d83d-41b1-b66c-b6fbbc192868/nowawatevimaxurutel.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/21980046670.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54f63fe8-907a-44e1-86df-033a8b037e32/75862850488.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/xekusevuwe.pdfIn PDF document text
    • https://s3.amazonaws.com/lopazura/kofimopo.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/unblocked_games_snake_io_77.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21dd2961-3e86-40b4-9ddf-9cf56436259b/modals_of_obligation_prohibition_and_advice_exercises.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.

FilenameKindSourceSize
font_00_sfnt_off0000c258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC258 5704 bytes
SHA-256: 0a1791c61057d47c8782fcf728055c5b2431ad53743a8443eeae3496f3cb9694
font_01_sfnt_off0000d5b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B7 10288 bytes
SHA-256: ba0d90f3f2284802c38d4add45ce1fd01917e531691c2b3e5b79e4bf9bfca90e

Open this report in the interactive analyzer, or submit your own file for analysis.