Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97940176b0be73a…

MALICIOUS

PDF

83.8 KB Created: 2021-02-14 18:49:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9626fe52c71ad57bc1b770c0749a567d SHA-1: 3c667fbc9d33e6a79867b48a79b143f8035b0bd9 SHA-256: e97940176b0be73a2351ef4fd2dccab6ebe483f150b6b8e59eb100f99e8a167b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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=iffie+nitter+osrs PDF link annotation
    • https://jubibesu.weebly.com/uploads/1/3/1/3/131379113/649700.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/j612669/bubble_pirates_bubble_shooter_bird.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476751/normal_602436a06acc1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385028/normal_5ff9ebbddacbb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379603/normal_5fce48001fc2c.pdfIn PDF document text
    • https://cdn.sqhk.co/nexetifosam/Fzid0ja/080_naija_for_life.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/UGjbhdP/xifulokamemobuzazure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464311/normal_5fcecd18d1742.pdfIn PDF document text
    • https://cdn.sqhk.co/lovojekaboxi/ahabjfU/royal_caribbean_international_jobs.pdfIn PDF document text
    • http://menegatuje.iblogger.org/arizona_defensive_driving_school_final_exam_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/gImlYuw/58230662191.pdfIn PDF document text
    • https://xoxoxiwozolem.weebly.com/uploads/1/3/0/7/130739626/dedukexi_xofal_feweguwowuwu_lezimirowisa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381980/normal_5ff43accdff73.pdfIn PDF document text
    • https://cdn.sqhk.co/vasegodesazu/QaxMuhf/arzareth_yeezy_adidas.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/fedure/57010581293.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_off00010b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4C 4456 bytes
SHA-256: 8fe03597478ed335ba7952bd8108c78ecdfd755fee47c8a6d7ef858e3928655f
font_01_sfnt_off00011a83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A83 11884 bytes
SHA-256: 64f4d9ce97c7ba4ca320c847255784b44b3388f8ca929e15b14e32a425674f5b