Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d7637b28563b8bb…

MALICIOUS

PDF

68.6 KB Created: 2021-02-14 06:58:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 521fdc42f803b35595a37c36cfcfb21f SHA-1: b10b09e6d8a9c64568fd646687d4a48b214e2e40 SHA-256: 6d7637b28563b8bb7cadea34202b661b3e91f4efad6e37d0faa4b6a09945e394
184 Risk Score

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://yafferge.ru/wix?keyword=nfs+payback+dlc+trophy+guide In PDF document text
    • https://kivobuduzuv.weebly.com/uploads/1/3/0/7/130739084/popabenufotigininu.pdfIn PDF document text
    • https://cdn.sqhk.co/xisiwuba/NhbrxVp/24717887086.pdfIn PDF document text
    • http://thrivewebs.com/20838004198hygw6.pdfIn PDF document text
    • http://help-copyrighteamservice.com/702492227375l3vg.pdfIn PDF document text
    • https://cdn.sqhk.co/biposuba/ajjheja/26385985455.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459328/normal_5ff7cda193b8e.pdfIn PDF document text
    • http://betflixguvenilirmi.com/4884005881ffr6a.pdfIn PDF document text
    • https://binazinir.weebly.com/uploads/1/3/4/1/134108718/37f1940.pdfIn PDF document text
    • http://salonlabs.xyz/currys_slimline_dishwasher_manualnh3rp.pdfIn PDF document text
    • https://vojidejera.weebly.com/uploads/1/3/2/6/132695434/af94f504.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476268/normal_6021ce8b6ed70.pdfIn PDF document text
    • https://sezenoxesakibek.weebly.com/uploads/1/3/0/7/130740551/lozij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416502/normal_6019a2d4db68d.pdfIn PDF document text
    • https://cdn.sqhk.co/fokatekox/GFaiigI/dimeloxazomobodas.pdfIn PDF document text
    • https://zedalikekotax.weebly.com/uploads/1/3/1/1/131163955/lujupadagokoseb.pdfIn PDF document text
    • https://novomuzedideb.weebly.com/uploads/1/3/1/4/131406537/roluvigaf-dizito-divexigaku.pdfIn PDF document text
    • http://lnstagramsupportinfo.com/5096315136gms7o.pdfIn PDF document text
    • http://myyshooop227.site/pufolifm8ebp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459796/normal_6007c4928a0c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ce04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE04 5692 bytes
SHA-256: 5a71acdabb77f3228786e8ff394b5a7e54512167569e3361842fdc7532c5350b
font_01_sfnt_off0000e16c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16C 10500 bytes
SHA-256: 0385cde5b7d5f3bbbaeb5e3c2b0e17bf4ee101fe23c104f44e090b8f8801ab70

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