Malicious PDF — malware analysis report

Static analysis result for SHA-256 56bd690c9ee53619…

MALICIOUS

PDF

73.5 KB Created: 2021-01-12 19:04:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ad61602f6d6e239f4bf016217c8c5e1e SHA-1: e8a92d0853514207e69f4cc8ee3b8b8a276f0f84 SHA-256: 56bd690c9ee53619f08e115451bb6c82a5c5818444eb50445dd81a9b100d909a
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that, when visited, likely leads to further malicious activity. The document body, though heavily obfuscated, contains text related to a 'Ted Bundy interview video', suggesting a social engineering lure.

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/123?utm_term=ted+bundy+interview+video PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460686/normal_5ffdb5dce7f15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383699/normal_5fdbb55805cb4.pdfIn PDF document text
    • https://site-1176112.mozfiles.com/files/1176112/vedat.pdfIn PDF document text
    • https://cdn.sqhk.co/lepemafe/nSja5hd/little_fox_chinese_level_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501810/normal_5fd7fb2a41795.pdfIn PDF document text
    • https://site-1174503.mozfiles.com/files/1174503/kung_fu_tea_menu_vegan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448542/normal_5fe023136f07d.pdfIn PDF document text
    • https://zanubago.weebly.com/uploads/1/3/4/8/134886268/sotel.pdfIn PDF document text
    • https://cdn.sqhk.co/joxesinejag/cdhejhv/download_game_light_it_up_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417325/normal_5f98f6e6bb61f.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/netinuwa/ivabradine_chf_guidelines.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_off0000e612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE612 4744 bytes
SHA-256: 5f4b7143cf645eea763f72c1686fffbd41c3cd199fc420847ce6d16ce82d326c
font_01_sfnt_off0000f658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF658 10252 bytes
SHA-256: f2a0ae2bee6685964adfaa28531d77c3d3039724c113d0281d76572a2feecb5b