Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df190d83bb625fa…

MALICIOUS

PDF

69.4 KB Created: 2020-12-23 02:13:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 95c6af3318e32eb7f455d73a4a6782e4 SHA-1: 9958cb14ffe5ca7542f80051d0677340a18cb761 SHA-256: 7df190d83bb625fa8ce3b31c22bba9870f6858dbf231b1a0bb47bb9b0c0c0e09
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of an external URI and the overall classification suggest a phishing or social engineering attack.

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?utm_term=cake+recipe+book+for+beginners+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465548/normal_5fd8542f6d0b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445115/normal_5fe0a05dced63.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/420dffb2-d5ea-40a9-88d3-973d9da99dc9/bisulobetikepifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b8c2b7a-1b3c-4431-bb17-36b8eb87d837/ninipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2d4172a-b33f-4ba7-af3f-7ab1e5cff5a3/brian_younger_folger_hill_asset_management.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/dasewavize.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/learn_fingerstyle_guitar_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc84d8e0-2e47-49ab-8939-083b07f4ecb2/puxubever.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28eaf9698b02c7f2b2aca/t/5fc9780997cced73bdc05a7a/1607038987147/war_and_order_forum_pl.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/vufazolakiwupoxid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e98476c-09d0-4300-86a1-dfca2c54af45/11679488503.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdcbb9339856919c2930471/t/5fdcd2506c473137a87b5430/1608307283072/alarm_controls_600s.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_off0000d26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26E 5400 bytes
SHA-256: 6564d59197c9f3f19aa089ec705aec77812cd5ac2004c1347a994adf081fb9c8
font_01_sfnt_off0000e4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D6 10580 bytes
SHA-256: 7fcef8063f7a6110efe8c7422ebab7e2dd5c917e4643ee9807543cb4dafa4788