Malicious PDF — malware analysis report

Static analysis result for SHA-256 79f34b7813bce94b…

MALICIOUS

PDF

63.7 KB Created: 2021-02-26 01:16:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5a45890ad6b81d11475d735073277eae SHA-1: 621f00356f26ee10484750d5011efdcae968c34d SHA-256: 79f34b7813bce94b008e1c47cc4b5df6da1198bb0e0841dd115bddea682f38a9
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/award?keyword=energizer+battery+charger+model+chfc+v2e PDF link annotation
    • https://cdn.sqhk.co/fasisela/dL3hdxO/basketball_arena_near_me.pdfIn PDF document text
    • https://fibisozobafuraz.weebly.com/uploads/1/3/4/5/134529143/6260615.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/gzhfkN8/reneliwofosina.pdfIn PDF document text
    • https://mugezumaz.weebly.com/uploads/1/3/4/4/134401185/kupikuxukaraka-lujitar-gopaded.pdfIn PDF document text
    • https://cdn.sqhk.co/redusebi/eHdDicN/16679791641.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/BgcUbh8/gpisd_skyward_login_garland.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/ghMhdez/13925835569.pdfIn PDF document text
    • http://rekopeza.22web.org/56139296345.pdfIn PDF document text
    • https://cdn.sqhk.co/litonesi/geii3ic/89176814632.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/watajive/jebamitun.pdfIn PDF document text
    • http://pefuganut.epizy.com/arbonne_immunity_booster_meet_the_product_sheet.pdfIn PDF document text
    • http://zotubune.myartsonline.com/accuair_e-level_touchpad_controller_manual.pdfIn PDF document text
    • http://muxopuwe.epizy.com/93114310475.pdfIn PDF document text
    • http://firuwasuwubo.epizy.com/98413489154.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/75957374559.pdfIn PDF document text
    • http://tulajadulixo.myartsonline.com/conjugar_verbos_en_ingles_en_pasado_continuo.pdfIn PDF document text
    • http://gazezubutajon.rf.gd/what_rhymes_with_pairs.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_off0000bd52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD52 5700 bytes
SHA-256: 49e6841311d5d5886104bfdb246f81cad6959c2be0d8bd0978637084a2c47da3
font_01_sfnt_off0000d0ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0AE 9644 bytes
SHA-256: cd93f0dce9b9a5c4058cfb2adf144c98de4f6d446c6994eff211695c618cba72