Malicious PDF — malware analysis report

Static analysis result for SHA-256 791fe658fffa280f…

MALICIOUS

PDF

64.6 KB Created: 2021-02-17 17:53:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9be4e7ee5fe06dc6d3f079e613b3ec74 SHA-1: 7cb007e70d1ec0a19b3157e9b7df01c644c3fc3e SHA-256: 791fe658fffa280fb0d889bafdd4edef096b8220aace75191cd5c536dcf682eb
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://jottigo.ru/wb?keyword=psychology%204th%20edition%20schacter%20pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4462066/normal_600cdf6144050.pdfIn PDF document text
    • https://mefiremen.weebly.com/uploads/1/3/0/7/130776246/tosame_levoz.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/djc0Aia/red_and_blue_states.pdfIn PDF document text
    • http://kukushpa.fun/titemaki1zp08.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427268/normal_5fd04a620a441.pdfIn PDF document text
    • http://sale20.site/the_lawless_clone_wars_review0ixro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369660/normal_600b49b1bddc9.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/jbiiCb7/busapol.pdfIn PDF document text
    • https://wubigunes.weebly.com/uploads/1/3/4/5/134507070/zifetaritivaliz.pdfIn PDF document text
    • https://cdn.sqhk.co/taxuvoguraji/ibjejet/tilijukunenodof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480579/normal_6010880385d0f.pdfIn PDF document text
    • http://gufutaca6.xyz/15370188914aapvk.pdfIn PDF document text
    • https://tavugalijob.weebly.com/uploads/1/3/1/1/131164394/xotavuz.pdfIn PDF document text
    • https://cdn.sqhk.co/wujozuzewed/haehaRL/download_game_badminton_league_2020_mod_apk_offline.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/latufenaw/73261558008.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_off0000c15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC15E 5608 bytes
SHA-256: ec76b3ffbc980570913a5280e67a74144e1ddba73ed7c0cefabb384e91336de5
font_01_sfnt_off0000d47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD47A 9592 bytes
SHA-256: 02ba3a746e5d2ce1b9e6e6f9a2ab2b4e0baf5483a7b225151b228de76757fdf5