Malicious PDF — malware analysis report

Static analysis result for SHA-256 c899be471afb5455…

MALICIOUS

PDF

68.1 KB Created: 2021-02-25 16:28:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4f226b5f00f3e54ee7f2e8974de67522 SHA-1: 26609ce68e345e6bf87789a13ad746f9779ea9b9 SHA-256: c899be471afb5455c00ab10c51eca973231c6393292d07cdf5d91b370c9ad28d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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/aws?utm_term=conceptual+physics+textbook PDF link annotation
    • https://cdn.sqhk.co/puwupasakej/iaoggib/2281182026.pdfIn PDF document text
    • https://vujipobunovopo.weebly.com/uploads/1/3/5/3/135324227/5c208785fa9.pdfIn PDF document text
    • https://sefelitajirowa.weebly.com/uploads/1/3/0/9/130969992/df2e26df23cb.pdfIn PDF document text
    • http://fixmarker.fun/limitless_movie_download_in_dual_audioikio5.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/acihJgj/gem_mineral_show_tucson_2019.pdfIn PDF document text
    • https://garujidizog.weebly.com/uploads/1/3/1/3/131398488/2370219.pdfIn PDF document text
    • https://cdn.sqhk.co/muresogus/tmjj6gd/roku_ultra_review.pdfIn PDF document text
    • https://mufajagirudul.weebly.com/uploads/1/3/1/4/131452858/xamitam.pdfIn PDF document text
    • https://lobubizewi.weebly.com/uploads/1/3/1/8/131856209/1709318.pdfIn PDF document text
    • https://cdn.sqhk.co/tamaladafa/hfgiqjg/46318536065.pdfIn PDF document text
    • https://karomigotel.weebly.com/uploads/1/3/5/9/135962203/milubevuxuxisu.pdfIn PDF document text
    • https://wigewowatabosaz.weebly.com/uploads/1/3/4/3/134352056/gorojeko_sokojepubeli_vuxaf_tapug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gewagopixinilu.rf.gd/44252889830.pdfIn PDF document text
    • http://pevivudawof.epizy.com/pefafegivapoxubumeguti.pdfIn PDF document text
    • http://wexotorat.rf.gd/puwuretunizitoziji.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_off0000ce97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE97 5204 bytes
SHA-256: 0094d3f6c6e09de814ea6fe6a995ce9e525712eaec8fd3108f0e1f16d89e9d1c
font_01_sfnt_off0000e04a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04A 10376 bytes
SHA-256: 3ecb98e3ca51b5a57f464dc9d68ff930b6f8b79ff2546dafa21973d1a02fc566