Malicious PDF — malware analysis report

Static analysis result for SHA-256 665eeba7d5af98de…

MALICIOUS

PDF

63.9 KB Created: 2020-11-10 22:48:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b9fd365b2ccb04c74995bdc19179e520 SHA-1: c12e52e7289d9d807bfcf3eeb23ef9f241e00eeb SHA-256: 665eeba7d5af98de58b753f642b191449fb20a6bfaf1d77677294ea767c7b05b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafficel.ru/wb?keyword=mother%20gooney%20bird%20dr%20jean%20youtube', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/wb?keyword=mother%20gooney%20bird%20dr%20jean%20youtube PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377678/normal_5fa0e62bde705.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388405/normal_5f9f109eaf559.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372104/normal_5f8b2aca26859.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449405/normal_5fa2c1baa7014.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/dalava/hydroelectric_power_characteristics.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/xovepajevipezofulux.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/gebagibe.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/june_barcarolle_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0648ee7a-d820-41cb-bbcc-14681efed7f8/wheat_belly_diet_book.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/bribaebee_12_week_glute_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a42446f-2bbb-4af4-9660-b7554736bec0/pes_2019_bundesliga_patch_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/nebojeveloja.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/types_of_conflict_in_literature_slideshare.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/65668942250.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/windows_media_center_guide_download_error.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_off0000be3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE3E 5200 bytes
SHA-256: e107bc080b3872cf823536d4d68f2fdbdc8b389a4355b0c1989c8eace8e24711
font_01_sfnt_off0000d000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD000 10152 bytes
SHA-256: a4b7269321a2edb72caea69f40df061c3533b82a67415a8287537f8377891a82

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