Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b02061cf59665fe…

MALICIOUS

PDF

73.6 KB Created: 2020-12-24 03:10:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4e700dbf81872b66de02e124c443d29d SHA-1: c9d578d2874aeeec73808ed90d24d9130480dc15 SHA-256: 5b02061cf59665feaad6c4b06e94593dc8a932d4d1ba30baba822253ba1c0b0c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to phishing sites. The document body, though heavily obfuscated, appears to be a lure related to a turkey fryer manual, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/123?utm_term=charbroil+oilless+turkey+fryer+manual PDF link annotation
    • https://pebezudaxefen.weebly.com/uploads/1/3/4/3/134347708/4251199.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/12e72568-3328-4efc-93ef-e60ec67e4897/66719445216.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ffacaaf-3650-4fa9-8c45-1b97f8611451/steve_brule_sperm_bank.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8674fc1-611c-4ef7-b664-6eae06570b13/winx_hd_video_converter_deluxe_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/wavudodu.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/77667167685.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e31df34-348b-4639-a384-1a1a285d3ecc/joseph_di_mambro_biography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d6993b3-cdec-438e-86fd-5c9ef8d9cb5f/76550622201.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/session_fixation_prevention_cheat_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52612834-0177-4b0b-8519-7aeaa457da3f/33589610242.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_off0000e4b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B5 5216 bytes
SHA-256: e62991bf9fd81f42c3277e508a0a1f3d15ec6036fb97c69faa6bf8e937100a0f
font_01_sfnt_off0000f64a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF64A 10440 bytes
SHA-256: 95ff1f46fac5f8f195136ab66d8e0bbbcf0e74bdc4f0b67bd6ee7ca8eae3114f

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