Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9efac560a5799de…

MALICIOUS

PDF

66.5 KB Created: 2021-02-19 02:36:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4bcc0dded2338b247e5392601ab783a9 SHA-1: bc3aa0a42dbbdb317892a8661de4981dfbffd4ab SHA-256: b9efac560a5799de748f8b4ecbce63faae6e8a581b6c3e7a5cd948c69b7f7546
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/strik?utm_term=audifonos+bluetooth+lg+hbs+800+precio PDF link annotation
    • http://fortuneo.best/jogikusuxifolaohlu0.pdfIn PDF document text
    • http://vnds-super.space/yu_gi_oh_bakuralzm4g.pdfIn PDF document text
    • http://unosital.space/nilajulilu5qhhp.pdfIn PDF document text
    • http://ufenmac.com/338435059111nb0a.pdfIn PDF document text
    • https://dazenesulamese.weebly.com/uploads/1/3/1/1/131164173/fawogiwafejuxomixuju.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/iigjjj5/83653483685.pdfIn PDF document text
    • http://excellent-spb.ru/how_to_draw_horror_characters_step_by_stepxy68k.pdfIn PDF document text
    • http://datingsexchat.site/davupepejexolijl8evk.pdfIn PDF document text
    • http://ideaita.fun/38877649724lb638.pdfIn PDF document text
    • https://torovuzexas.weebly.com/uploads/1/3/2/7/132710592/2df321.pdfIn PDF document text
    • http://profyhouse.ru/2674184845bgof6.pdfIn PDF document text
    • http://vvinorama.fun/teradata_dba_tutorialtcci9.pdfIn PDF document text
    • https://gamajebijapam.weebly.com/uploads/1/3/1/8/131856653/samepupafetili.pdfIn PDF document text
    • https://zoxaminajoge.weebly.com/uploads/1/3/1/6/131637873/6c48512.pdfIn PDF document text
    • https://sidafixeruj.weebly.com/uploads/1/3/2/6/132681612/lifedaxe-jugubul-pavaveko-pavisususupane.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_off0000c60e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC60E 5672 bytes
SHA-256: d6c08d26914fd54318f95bf62d9420e57ef3cb50aa1074eb06d643bc2308bf7a
font_01_sfnt_off0000d959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD959 10652 bytes
SHA-256: e88e242dff65401f232f8c4f77806d31a36009129000b7575a144545bb188ad3