Malicious PDF — malware analysis report

Static analysis result for SHA-256 8690687fafed4419…

MALICIOUS

PDF

73.7 KB Created: 2021-01-31 09:22:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bc823759235ff73dc4675ade82672cb8 SHA-1: fd87202fc42b0bc26657e48d8dd2e76ddd76e65d SHA-256: 8690687fafed44199a6993aee5332f2f99b46a99b1c41ac291cb8ea592b6a3fc
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bologen.ru/wb?keyword=transformers%20forged%20to%20fight%20hacked%20apk%20download PDF link annotation
    • http://titoto.xyz/sao_hollow_realization_quest_guide57r1j.pdfIn PDF document text
    • http://samelike.site/beat._ly_music_video_maker_with_effects_modhe5am.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475987/normal_5fd102d7bfe3b.pdfIn PDF document text
    • https://fazokovonopa.weebly.com/uploads/1/3/5/3/135329702/04d142dbb.pdfIn PDF document text
    • https://fusonunobowur.weebly.com/uploads/1/3/0/8/130813531/9826282.pdfIn PDF document text
    • https://woremudof.weebly.com/uploads/1/3/4/7/134701645/jajogasarisak.pdfIn PDF document text
    • https://ledimame.weebly.com/uploads/1/3/5/3/135306483/2754f6d86665.pdfIn PDF document text
    • https://duwifugikez.weebly.com/uploads/1/3/5/3/135351140/5131975.pdfIn PDF document text
    • https://mokugutareno.weebly.com/uploads/1/3/1/6/131606089/7209183.pdfIn PDF document text
    • http://shortsomfj.space/kamidezupugewaludsw4y.pdfIn PDF document text
    • http://netlysy.online/psychosis_4.48e3gc0.pdfIn PDF document text
    • http://hookup757.fun/hero_dash_diecast_spinoff_mini_gamesgx8me.pdfIn PDF document text
    • https://sodefabufu.weebly.com/uploads/1/3/4/4/134473286/dipawaj.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/xalexojaxipud/walmart_annual_report_2005.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/80068396416.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_off0000ddc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC8 5672 bytes
SHA-256: 3a876b7469a992edcc30bf9605d1eb133562ffdc3220302276def05aec8e3fbe
font_01_sfnt_off0000f0fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FC 12092 bytes
SHA-256: d92b369d24e9a07c9ae17cda4ad50d6cf41d3e648e683979039b91529ad89b38