Malicious PDF — malware analysis report

Static analysis result for SHA-256 e92cc11f186d2cb6…

MALICIOUS

PDF

70.8 KB Created: 2021-02-14 07:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c797a1c4b658a5444edc98217210304a SHA-1: f4f0b30308ad8c053329714d67e95ac135875c18 SHA-256: e92cc11f186d2cb661216e0e1f6695ddcf94760fe811f51bab5d7126f5af3a31
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://seumenha.ru/123?utm_term=plants+vs+zombies+2+hacks+ios PDF link annotation
    • https://cdn.sqhk.co/tusadopovet/Z7igkia/pencil_pouch_target.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470526/normal_5ff0a372ac34b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454677/normal_600684d5bb768.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/L8Thgjg/anime_maker_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/visukodo/WQcbIOA/marvel_stadium_seat_location.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/je6gfji/70264964954.pdfIn PDF document text
    • https://cdn.sqhk.co/zejegure/lwPheih/logis_tycoon_evolution_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485457/normal_600cbc7f5efc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_6010a21c44334.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392444/normal_5ff69ef0770ca.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/jhQMijR/64858491470.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387412/normal_5ff67d2db8b92.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418783/normal_5ff61cab8fb1c.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/hKulSie/88564331196.pdfIn PDF document text
    • https://duloduwo.weebly.com/uploads/1/3/4/8/134850843/d9b9e0de6f8e2.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/degisapemifa/83688377092.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/kutavuwovam.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/25417120045.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_off0000d5b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B2 5388 bytes
SHA-256: fe493eb276b4b641fe65d799f8adb9dfed2133482d794027b3687165c50d3ac1
font_01_sfnt_off0000e7f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F8 11324 bytes
SHA-256: be207ab52fc3063eda4050e6b1936699070258ee34d444b9b68ecb789e352ca5

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