Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff61329c92690af…

MALICIOUS

PDF

72.3 KB Created: 2020-12-14 18:26:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 13a171fa4e0b840c8660457d48008f8d SHA-1: 764735ca56be7483867a7a2a390c7333a14eb565 SHA-256: 7ff61329c92690af0e29e9affa5a7cff632c90ea23fe8f0552b6e8c109e5a315
184 Risk Score

Malware Insights

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

This PDF file contains embedded links that redirect to known malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, appears to be a lure related to 'elk ridge knives amazon', suggesting a phishing or scam attempt. The presence of multiple disposable hosting links further supports a malicious intent to direct users to harmful content.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cctraff.ru/123?utm_term=elk+ridge+knives+amazon In PDF document text
    • https://laverikiwife.weebly.com/uploads/1/3/4/5/134502667/4004344.pdfIn PDF document text
    • https://zatafepe.weebly.com/uploads/1/3/4/0/134000007/4453180.pdfIn PDF document text
    • https://sixapinipuso.weebly.com/uploads/1/3/1/3/131384402/9961e8dbb5c20.pdfIn PDF document text
    • https://ruxodinari.weebly.com/uploads/1/3/4/3/134377607/gapaxin.pdfIn PDF document text
    • https://fivakamine.weebly.com/uploads/1/3/4/3/134384559/gomakajubulel-mikakegaso-dakupez-pikuj.pdfIn PDF document text
    • https://fosaxobe.weebly.com/uploads/1/3/4/8/134882536/ed7322d8.pdfIn PDF document text
    • https://vutuwoti.weebly.com/uploads/1/3/4/7/134720014/deguximula_merezikavisofa.pdfIn PDF document text
    • https://zajuzuvo.weebly.com/uploads/1/3/4/4/134474050/1615303.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/limepusotanal/lake_belton_texas_fishing_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f41a0bdd-3bcd-4ace-ac44-accea1bd65f3/72699726058.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/zifaxixow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/666588f2-fc7f-44bb-a037-12ee5ef4aeec/purilixut.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/66514766674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fa17220-f948-4475-9e72-7003d17345f0/menoetius_is_the_titan_god_of_what.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/91439865276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1723aab5-6a15-47e9-a908-a3756ea2195f/rizajenolimel.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_off0000dceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEB 5276 bytes
SHA-256: 9325f98cacbf0aa7abf5e88757c5da411ab7c2fc98d659011ea018bcd6c3f3fe
font_01_sfnt_off0000eedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDB 10588 bytes
SHA-256: 6618baf041ebb877e5b42133e86e7c3c80a367c3bb136b0b560970afdcb3a521

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