Malicious PDF — malware analysis report

Static analysis result for SHA-256 271271b795daab23…

MALICIOUS

PDF

78.2 KB Created: 2021-02-27 19:52:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ef68ef962e56517165042127abf0d4f7 SHA-1: 3bda3c0fbd99062049ccbbae975df7c785a2611f SHA-256: 271271b795daab23cb7ad1b3b9773f8cbdca0a857734123ca8c5e7fdd334ec69
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://pelibifir.ru/strik?utm_term=influence+of+green+and+lean+upstream+supply+chain+management+practices+on+business+sustainability PDF link annotation
    • https://cdn.sqhk.co/tokafumotebi/s6qzgcG/21096133435.pdfIn PDF document text
    • http://fukoxonezadanom.22web.org/59093788037.pdfIn PDF document text
    • http://helps-lnstagramcopyrights-about.com/3146779736f7zid.pdfIn PDF document text
    • https://burekanokem.weebly.com/uploads/1/3/1/0/131069897/2af63341d.pdfIn PDF document text
    • https://cdn.sqhk.co/xoberuweri/p0jaaZZ/93588011898.pdfIn PDF document text
    • http://leseweremizew.scienceontheweb.net/substitution_effect_for_perfect_substitutes.pdfIn PDF document text
    • https://cdn.sqhk.co/janezewufaj/chjehbT/disorun.pdfIn PDF document text
    • https://cdn.sqhk.co/nubevitawil/jdifgc3/68906698155.pdfIn PDF document text
    • http://moviesaddaa.online/kobisivajumigawomapiwavv3v.pdfIn PDF document text
    • http://kutebirodomo.22web.org/wetivotagifux.pdfIn PDF document text
    • https://tazesarazuf.weebly.com/uploads/1/3/4/7/134726557/rujigug.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/35219297795.pdfIn PDF document text
    • https://cdn.sqhk.co/modonasuje/bijxhi1/29983093880.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://borogibapomad.epizy.com/guided_tours_of_toledo_spain.pdfIn PDF document text
    • http://zezexef.epizy.com/dadovewulexazijotibove.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_off0000f3d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D6 5748 bytes
SHA-256: ef11d4e91f465c0755870b52bb1b1e842e266ad941092e7f0f1d533311b0b8c1
font_01_sfnt_off00010741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10741 10460 bytes
SHA-256: 366f07d90ec5709bf36fc4fafa381bf0a9f2de551f243f200ef4208bcbe59ed1