Malicious PDF — malware analysis report

Static analysis result for SHA-256 966c59d48ef02195…

MALICIOUS

PDF

74.2 KB Created: 2021-03-02 22:03:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3ae9eba2a2f233ce97f6bb9681a67238 SHA-1: 7350de5ddf847b55e5f7e77cc806df8b8e1b9c26 SHA-256: 966c59d48ef02195fbf2cd03cefa1bf8a5f3b2233115d3eed4e1112d177ace4a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=commercial+soft+serve+ice+cream+machine+reviews PDF link annotation
    • https://tokokurud.weebly.com/uploads/1/3/4/7/134744431/6595177.pdfIn PDF document text
    • https://fukusegoboviv.weebly.com/uploads/1/3/1/8/131856281/8360091.pdfIn PDF document text
    • https://fabapetabi.weebly.com/uploads/1/3/4/6/134687037/purininujupa-sikixubamin-xutixurawo-lejewevaji.pdfIn PDF document text
    • https://sojagimizalafar.weebly.com/uploads/1/3/5/3/135317111/7207053.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/car_air_conditioner_stop_leak.pdfIn PDF document text
    • https://wupebeziwemipi.weebly.com/uploads/1/3/5/3/135315897/4701457.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407777/normal_5ff175fb587b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486523/normal_5fda738aabe69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393898/normal_5fe0c11a00dfc.pdfIn PDF document text
    • https://dosijusesuxola.weebly.com/uploads/1/3/4/3/134305349/ff3f57d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459035/normal_5fe5d6205c446.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485828/normal_5feb2faf21e07.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ziwivazud.onlinewebshop.net/duraflame_3d_navy_infrared_electric_fireplace_stove_with_remote_control.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/ledagokimasozezi.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/modilunaxekejofodoxed.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_off0000e623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE623 5176 bytes
SHA-256: 01b93de4b4579b1a79b760ddbf2fb291074696dddac725ffb577b441d1e44b7a
font_01_sfnt_off0000f79e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79E 10584 bytes
SHA-256: b5806ea620e5f611d139c844ad0b9d5b22aecb96d413a2997e903d7db66d14aa

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