Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd8c459b41d5b1c…

MALICIOUS

PDF

68.6 KB Created: 2021-03-01 20:46:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 27d1d689c339718ee5b8b068961888ac SHA-1: c7c91d122bfaf1f15dc5463d7c8579e870e55bda SHA-256: 0bd8c459b41d5b1c955a611f2d3af65154d4b476f342926325361664f727f4d3
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://soxebez.ru/award?keyword=britax+car+seat+stroller+combo+target PDF link annotation
    • https://kaxogirigajel.weebly.com/uploads/1/3/4/6/134611066/ed3354571c.pdfIn PDF document text
    • http://wetiludivarag.scienceontheweb.net/juego_de_tronos_libro_1_paginas.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/cR696ig/grey_cabinets_with_different_color_island.pdfIn PDF document text
    • https://dufubixapitosig.weebly.com/uploads/1/3/4/5/134503348/aff798.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389571/normal_5fd725a05544e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495065/normal_6007204a18b0a.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/h1hfTha/new_mod_among_us_for_minecraft_java.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/Xig3Mgh/megamind_soundtrack_imdb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390074/normal_5fffc32300f0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_6029dc36516c8.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/gthjhem/ticket_to_ride_card_game_review.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/wegetovif.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/ffxiv_airship_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/alberta_county_map.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC655 5060 bytes
SHA-256: cbabaa0ef9dc47878508ab0db68bd37c406ac3bd738ec008238628477bd65abc
font_01_sfnt_off0000d78a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD78A 8796 bytes
SHA-256: a7743725a3ea4b3275d36874f95b33291a2858043bc860f44c5c44c7396a88cb
font_02_sfnt_off0000f5c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C1 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71