Malicious PDF — malware analysis report

Static analysis result for SHA-256 72761300b85b5c52…

MALICIOUS

PDF

59.8 KB Created: 2021-02-18 15:48:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 635b03e24f25261089ebe122a9675368 SHA-1: 6b463d0d491b479e00fd7c2c2602b7d3ff018d53 SHA-256: 72761300b85b5c52d30b6fbc485b0fee79243e2fce1944d8f8b70e8b90b1cc6f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/wix?keyword=one+big+party+quiz+answers PDF link annotation
    • http://muzoc.xyz/bafosabugy5.pdfIn PDF document text
    • https://galanutix.weebly.com/uploads/1/3/4/5/134591813/337244.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/wokariwurawoji_doruso.pdfIn PDF document text
    • http://balifruit.com/marketing_strategy_7th_editionj5kfy.pdfIn PDF document text
    • https://cdn.sqhk.co/dusujukakal/5jfAoif/farudefewefipotexibow.pdfIn PDF document text
    • https://zizujegaduxopur.weebly.com/uploads/1/3/5/9/135972979/c769b54437b.pdfIn PDF document text
    • http://groby-ritual.online/juginikajajivujefutagqdfe1.pdfIn PDF document text
    • https://tofibuji.weebly.com/uploads/1/3/5/3/135309424/xejudokoxar.pdfIn PDF document text
    • https://lepovomika.weebly.com/uploads/1/3/4/7/134701686/benelagogovi.pdfIn PDF document text
    • https://gupexududoteg.weebly.com/uploads/1/3/5/3/135302954/nevotojusazogur-warogofinofuk-maweduxibazenax-sidise.pdfIn PDF document text
    • http://mevolufasizi.22web.org/89782607573.pdfIn PDF document text
    • https://gifolavetufo.weebly.com/uploads/1/3/2/6/132695571/fadewolunadite-papitesepeso-penagusu-naremosilowat.pdfIn PDF document text
    • https://zirowebepalijiw.weebly.com/uploads/1/3/3/9/133986526/wowij_neginawazumaw_zugosikoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sedoguzod.rf.gd/71195232085.pdfIn PDF document text
    • http://tezogaxexinaga.rf.gd/90373317941.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_off0000b238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB238 5492 bytes
SHA-256: b73bcbe599b9b896f9ab852608728f92eb105ede6bca615829030b01c8bf80e7
font_01_sfnt_off0000c508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC508 8676 bytes
SHA-256: 97248511b3136740c787531bae3cc4ed9325aa0857685d7fafa35e27a4b93093