Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b2443bc29981db…

MALICIOUS

PDF

71.9 KB Created: 2021-02-11 17:55:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ad9bded10ce6e657d78459eb3068879e SHA-1: ff54aa019f7549a8acf7158d0b7af54b2ce27737 SHA-256: 08b2443bc29981dbf0f26ba218ff88bea8fd56441df552ee74e6cd1d1c3aa5e6
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://leonvi.ru/wix?keyword=crossy+road+apk+mod PDF link annotation
    • https://bejasesazopo.weebly.com/uploads/1/3/4/5/134512805/9522228.pdfIn PDF document text
    • https://bajiwemijowulu.weebly.com/uploads/1/3/5/9/135990815/971174.pdfIn PDF document text
    • http://bikupiribofaz.iblogger.org/timuvuvisesogivijed.pdfIn PDF document text
    • https://kaxaxelakag.weebly.com/uploads/1/3/4/2/134235500/dunudezevesajoguv.pdfIn PDF document text
    • https://leximefowa.weebly.com/uploads/1/3/2/6/132680903/migam.pdfIn PDF document text
    • https://noremovex.weebly.com/uploads/1/3/4/8/134883944/zexakojimatakak-vokumanide-luralolatifal-xebufexosokix.pdfIn PDF document text
    • http://nesobaka7.xyz/wejazefotekeku1js.pdfIn PDF document text
    • https://miniroworopan.weebly.com/uploads/1/3/4/4/134444940/lukato_sanaxira_bidubatanuzij_kigananepija.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/38847079675ttyfa.pdfIn PDF document text
    • https://daxixulo.weebly.com/uploads/1/3/1/0/131070202/juzuripadadowu-divagodidiwisi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bejiteviv.epizy.com/34250683458.pdfIn PDF document text
    • http://jenikov.epizy.com/malta_flag_state_inspection_report.pdfIn PDF document text
    • http://puwomuf.rf.gd/3127820096.pdfIn PDF document text
    • http://rudavuvubizuz.rf.gd/how_to_create_calculator_android_studio.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_off0000ddfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFB 5144 bytes
SHA-256: 7be48f4d4d55a7aa178b5e99853a97522a6fdbd0b082ab22f08b1a4fdf0b1e99
font_01_sfnt_off0000ef6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6B 10412 bytes
SHA-256: c3c1a66e0659c8f97d1c42df0a291d27fe8fc6e611026f7d25aa3dcb39115aff