Malicious PDF — malware analysis report

Static analysis result for SHA-256 54fe030406d847d3…

MALICIOUS

PDF

62.9 KB Created: 2020-11-24 22:04:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ada814370f6af82198cbdb768e346e03 SHA-1: 100015474eec6ffc49cabf265fae79c9018d8024 SHA-256: 54fe030406d847d3f99177d7d414cc8cfb29b32457099dd7ab29a158ee31af7a
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a domain associated with malicious activity. The document body, though heavily obfuscated, appears to be a lure related to templates, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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/aws?utm_term=free+pink+wedding+border+templates PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390328/normal_5fa250630ad82.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/dd836f6c-e2ac-4e3a-8b17-672f0c111d5f/82011097096.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/gifuwulofafupedewota.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/bengali_album_song_2018_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/472da49a-f3a7-4774-bf94-43e8f08b18a3/tiwumetijurifo.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/booklet_template_adobe_indesign.pdfIn PDF document text
    • https://s3.amazonaws.com/zokokamu/gulch_nashville_area.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/zelevufibewaro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f41ccfa1-3684-4957-8b51-d78c68306d4f/11_snf_eitsizlikler_zml_sorul.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_off0000bfdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFDB 5528 bytes
SHA-256: a89b5e1a71749d910afe17c64f480d96428c7ca3bf67ee1715dfb3d70f3f5267
font_01_sfnt_off0000d2a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A4 8752 bytes
SHA-256: 2e05b8a3088062fb8c1bd75ea99f31a6bc9acef041569448d518ec049fd259e3

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