Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f19b847be4deb68…

MALICIOUS

PDF

78.4 KB Created: 2020-11-11 12:55:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 533f06bb42613535e7ccc68538c39861 SHA-1: 9cbbdc09aa8b583fa8f1960004cf9bba67295bc5 SHA-256: 3f19b847be4deb6833eaf0590d4d79734090e24a5b6b32757bf7f7a0d25764ee
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, which is likely part of a phishing or malicious content delivery scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain metadata related to the PDF's creation and potentially the lure itself.

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://traffine.ru/strik?keyword=sefer+yetzirah+aryeh+kaplan+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368998/normal_5f87b291d2899.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374177/normal_5f9030add293c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444098/normal_5fa400ce694a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374521/normal_5f96043c91714.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401716/normal_5fabb2b37b2d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408002/normal_5f949a15a56e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374954/normal_5f895e265fcf4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366980/normal_5f8b3e236d701.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426547/normal_5fab7cc3b1abd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377102/normal_5fab6bb6d2ba4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bepukuba/eagles_club_north_canton_ohio.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/78450772966.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/puwesuzakuputerejevejulun.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE050 4948 bytes
SHA-256: bde072e89f5ef34c945ff7f1a67adb13d3306b9e07b5f1a79e84d0087f6a75e7
font_01_sfnt_off0000f11c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11C 13184 bytes
SHA-256: 0c92538bf20e6ff3e1f310610f845a7b64d1332f31afb36f51adfcb949c17023
font_02_sfnt_off00011cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CC3 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361