Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13eebff7fdc35c7…

MALICIOUS

PDF

64.9 KB Created: 2020-12-31 05:40:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 23f9bbc1dcc64a574d3b0d18fcad9758 SHA-1: b324c146f219a1b12ca2d1dfe0fb89d71af9c645 SHA-256: f13eebff7fdc35c709e49770893a9cc130a9b5e7ea44c22b018aeaeaf75603de
104 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into downloading malware. The presence of a 'download button' heuristic further supports a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffnew.ru/strik?utm_term=download+driving+speed+pro+unlimited+money PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384301/normal_5fb80ba90a565.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379046/normal_5fe34902cb1be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408321/normal_5f9c98f0c76ca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/vma_music_awards_2019_performances.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/ketosteril_tablet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34a44174-00c2-40a8-a3b8-470f250421a4/85337130296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87426545-c11b-4d98-b38b-bbafe39fd0eb/64810878021.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/62569468814.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/pubekopizijazupome.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/tupinebodud.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/34843463686.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/23870076098.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_off0000bec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC9 5532 bytes
SHA-256: ebd9ad6c902dfe21f76583699953ccff853e7768f1f4beaf56e7248ce02a1121
font_01_sfnt_off0000d1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B0 11092 bytes
SHA-256: 5e6a21b0e46c4477c37fcb23e9a378c021ac7f3fbe625c2d7cd43e44a5ac76c0