Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5cc1bd7ab0481f7…

MALICIOUS

PDF

40.2 KB Created: 2020-10-08 00:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cf74310d0c2fe933548d27fb1f7ed70c SHA-1: 9d9ff2fb6a47a8851b8432b698123c15097a033d SHA-256: d5cc1bd7ab0481f7371c49cf5669c0b6f3e2279f9a3e266935bfcd91b298bb0e
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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/strik?keyword=test+de+cleaver+pdf In PDF document text
    • http://files.michigannordicfirefestival.com/uploads/1/3/0/8/130814715/tebugu.pdfIn PDF document text
    • http://files.findingbea.com/uploads/1/3/0/9/130969762/likon.pdfIn PDF document text
    • http://files.inspiring-tomorrows-leaders.com/uploads/1/3/2/6/132682404/536152.pdfIn PDF document text
    • https://site-1041501.mozfiles.com/files/1041501/1182728494.pdfIn PDF document text
    • https://site-1039253.mozfiles.com/files/1039253/kilofokabivitibi.pdfIn PDF document text
    • https://site-1043662.mozfiles.com/files/1043662/61995584764.pdfIn PDF document text
    • https://site-1048205.mozfiles.com/files/1048205/54021831799.pdfIn PDF document text
    • https://site-1039695.mozfiles.com/files/1039695/jalomejofad.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/c79d2093-c34c-4781-a5b4-59ae376e1dd7/12993821679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ce9e44a-b3ce-46a0-a27f-dbb9a40b97ee/pakelopawunutebofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d5df527-a216-4e33-81d1-52600d62b249/vupiwux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64c657fe-0981-4553-a167-8a1e83cf454e/jajilo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/818bd148-26e6-4e2f-84f1-51e45ca027f7/18137755524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47a39ce7-42c3-407f-be55-8f2a856b8b7c/58386755003.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_off00006030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6030 5156 bytes
SHA-256: a6f3224411a818a0d0d4e73d6fe0f4b03d60cf1d4e6354406060484000b57eb5
font_01_sfnt_off000071d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D1 10248 bytes
SHA-256: c34db1e61802ce175e191f713224de03834936673e7fad56b87140adf44fdb15

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