Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b6c11469e02614…

MALICIOUS

PDF

73.0 KB Created: 2021-02-20 07:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ac3366dd60050f306d416be20ad80cb3 SHA-1: 73af013d0fc9d9c2004c0cc97970ff534c1f2440 SHA-256: b0b6c11469e02614929e7b0db701ca0d14c7eac98e477241e8a9bf663e1704d9
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://jacksth.ru/123?utm_term=how+to+measure+mikuni+carburetor+size PDF link annotation
    • https://cdn.sqhk.co/zamokaxu/iQgeOjd/29726890507.pdfIn PDF document text
    • https://rujikanonige.weebly.com/uploads/1/3/1/8/131872107/kikax.pdfIn PDF document text
    • http://xakojudanek.66ghz.com/13472579753.pdfIn PDF document text
    • https://cdn.sqhk.co/luxixumogez/hbFiifK/77831017520.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/XhghdJZ/dudosaniragi.pdfIn PDF document text
    • https://cdn.sqhk.co/rurokusulos/gchdNid/alien_vs_predator_2_chestburster.pdfIn PDF document text
    • https://vapevaka.weebly.com/uploads/1/3/1/4/131407737/fovakafalufo_wesun_detojipigani_nudoxabewi.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/dFU7E6o/nolejobidoz.pdfIn PDF document text
    • https://cdn.sqhk.co/detatakev/hhjfShc/mastercraft_x26_engine.pdfIn PDF document text
    • https://bisigategisabuv.weebly.com/uploads/1/3/4/8/134884720/foxuxob.pdfIn PDF document text
    • https://cdn.sqhk.co/livixugakuf/egimShf/tiny_bubbles_military_cadence.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419195/normal_600b201605833.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxijavapul/ghhdyhh/mopijumiwoxolusovilag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://razikonuwivomo.epizy.com/vilenojurug.pdfIn PDF document text
    • http://falalovoxiwada.epizy.com/77453305390.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_off0000e1b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B7 5220 bytes
SHA-256: f75fa204655a13742ab1e8cf5c194714a22ff852635f36a1b89fdcf99fc6c830
font_01_sfnt_off0000f376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF376 10476 bytes
SHA-256: 0abca71e610bde3702012583386c0ab46ee0ae026f222a77d9642a1855f08efc