Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc2d67317f9cd46…

MALICIOUS

PDF

72.1 KB Created: 2021-02-25 08:33:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 50d26e6a3556fdd203e63341501c7446 SHA-1: 0da525da7d1886dd1c8be138ec874841f02dbfa0 SHA-256: 1dc2d67317f9cd46582378bb298a1789cc54da6577950c07738c227f2ec71e22
126 Risk Score

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 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.
  • 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://leonvi.ru/award?keyword=integral+of+x%252Acos%25283x%2529 PDF link annotation
    • https://cdn.sqhk.co/dedogupazib/hchePjd/vajaxiwibu.pdfIn PDF document text
    • http://vittorguxx.site/405641321623vxh1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464874/normal_6020a99136d9c.pdfIn PDF document text
    • https://belinadojo.weebly.com/uploads/1/3/1/6/131607131/lotifozigivika.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416661/normal_5ff1672940036.pdfIn PDF document text
    • https://xasizati.weebly.com/uploads/1/3/5/9/135978204/8d43c082489ab1.pdfIn PDF document text
    • https://nuzewive.weebly.com/uploads/1/3/1/1/131164046/xofojek.pdfIn PDF document text
    • https://bumewotosebixab.weebly.com/uploads/1/3/5/2/135298585/nigemezonake.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/primal_strength_power_rack_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378857/normal_6023489cc09cd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rukosivujuxu.atwebpages.com/what_is_casual_leave_in_india.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC71D 5440 bytes
SHA-256: 29d31e51073d35c23a5891d8c72d83934cb0aa7f48f995e8e783daed9ffa727c
font_01_sfnt_off0000d9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9DA 10816 bytes
SHA-256: f264569823bc429a5cde504109be066aef031747c0fa3afc8f427d33db77f907
font_02_sfnt_off0000ff06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF06 16080 bytes
SHA-256: e3d583ca8131484f6b7e9991674a220a85ec8466745261d702706f92b0246cac