Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ed9d1aa5d5e777…

MALICIOUS

PDF

63.3 KB Created: 2021-02-18 09:53:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5a1aa06a6799a9baa42b92b194ee1275 SHA-1: 3a636121e015955ef34bc7d1e30b3e491bf09c3a SHA-256: 08ed9d1aa5d5e777a2564138216c0d346bf33ae6f7883755befb25cb4756bb05
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://maypoin.ru/wix?keyword=chemistry+chapter+16+standardized+test+prep+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446272/normal_5feeb32aa5465.pdfIn PDF document text
    • https://mubatizusilaboj.weebly.com/uploads/1/3/4/4/134475350/fijafu.pdfIn PDF document text
    • http://mebutef.22web.org/69496578827.pdfIn PDF document text
    • http://dusosax.66ghz.com/gifaj.pdfIn PDF document text
    • http://tvoyoproc.fun/the_old_man_and_the_sea_questions_and_answers9ekjq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382407/normal_5ffbc3e22f5e9.pdfIn PDF document text
    • https://manujemupofux.weebly.com/uploads/1/3/0/7/130738512/nabakixotodu-wubuniwujeduva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412382/normal_5fd1e6ece28f9.pdfIn PDF document text
    • http://miiliioner.xyz/pejuzijqhmc.pdfIn PDF document text
    • http://tizakeguwowil.22web.org/14072945674.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446646/normal_600a5d8b18f52.pdfIn PDF document text
    • http://xobezised.iblogger.org/42158207922.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wokupepafi.rf.gd/58425052224.pdfIn PDF document text
    • http://fixiwerasame.rf.gd/79355404440.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_off0000bbbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBBF 5636 bytes
SHA-256: ab649d3668acb4495ce22a4cf2bbad12b96fd38b1272bd036ff86200c12b7bf7
font_01_sfnt_off0000cedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEDD 9780 bytes
SHA-256: 769cf23bc51b1491c4473900c9df52640cb07e916f514b079a5a890e60c5d722