Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a95e6d113246fe…

MALICIOUS

PDF

72.2 KB Created: 2021-02-17 00:13:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 929b4542698d289e697807bf3cba81d2 SHA-1: 5ec920a5406d7a609668f58d7fc6bae1c5fcb50e SHA-256: c2a95e6d113246fede84e2bf5184262d527cfa73c22f72e8d04655aa0469258e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=red+rising+book+3+pdf PDF link annotation
    • https://cdn.sqhk.co/fujotojaxob/id4hbjj/50117637598.pdfIn PDF document text
    • https://cdn.sqhk.co/pegipoveridi/ySfgdRw/lenifej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484610/normal_5fe6c312eb1e5.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/qgd4wEi/zuxudegaxuzivasesazutotu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426087/normal_6013719350b32.pdfIn PDF document text
    • https://cdn.sqhk.co/nadetajagupe/jidjjgj/how_to_start_a_youtube_channel_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/razefudixid/VZ5ihhi/49886029409.pdfIn PDF document text
    • https://cdn.sqhk.co/letaziseb/ggIjbYS/xawagagesajatojok.pdfIn PDF document text
    • https://fometixivoros.weebly.com/uploads/1/3/1/6/131637143/punemax.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/T4fimiK/slot_games_online_free_bonus.pdfIn PDF document text
    • http://bavewemelemare.iblogger.org/vulot.pdfIn PDF document text
    • https://rosolivemimej.weebly.com/uploads/1/3/1/3/131382018/bifodukex.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/vebenok/28484246654.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_off0000ddbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBD 5340 bytes
SHA-256: beae9d8d214f6fb4226634abdf0f3b50333fe90e0df7dfa4fd7f51057498c129
font_01_sfnt_off0000f005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF005 10596 bytes
SHA-256: 951d67be297360f2c1ed37f646612b786ddea0d61b88528815a36bf565a430f1