Malicious PDF — malware analysis report

Static analysis result for SHA-256 21198d0718793656…

MALICIOUS

PDF

72.4 KB Created: 2021-02-20 05:50:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2bbc60f93aa5e145df860719165d2aa5 SHA-1: dce4f48ab185fdc326e39ee75c74eb38edc902a8 SHA-256: 21198d0718793656a3ab9ab4423593766a9980cfc6d6a5a8b2d418a56bb32dac
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/wix?keyword=willy+wonka+cheats PDF link annotation
    • https://getaforufuzok.weebly.com/uploads/1/3/4/7/134733873/gijekaf-luregokak-sukolodalur-dulifitexu.pdfIn PDF document text
    • https://cdn.sqhk.co/lomabufu/hjhjcot/terilozo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391000/normal_5ff7ba5676179.pdfIn PDF document text
    • https://bitusuverutito.weebly.com/uploads/1/3/1/8/131871453/wigorowanuzalod.pdfIn PDF document text
    • https://cdn.sqhk.co/posebozej/LifiirH/arizona_red_blue_game_box_score.pdfIn PDF document text
    • https://cdn.sqhk.co/kolokejo/i4gdMjh/kuxowaro.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/hdjfgh0/vintage_pachinko_machine.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/chbjajh/samsung_dex_note_9_windows_10.pdfIn PDF document text
    • https://bibatuzasofobi.weebly.com/uploads/1/3/4/8/134879938/4368730.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/kZhbdig/33492435124.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/b6767ff84.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/gixawetopoli/17246326663.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/97561915053.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/madura_raja_imdb_collection_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/raja_babu_song_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/logo_quiz_level_11_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/backgammon_opening_moves.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_off0000d3a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A4 4852 bytes
SHA-256: 787a64ae1ad5f10729ef4eaca3c4c60c885038f47965d7f25a74538d379f70f4
font_01_sfnt_off0000e42f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42F 10096 bytes
SHA-256: 68c59fa9d6955b13fcda14f8f9246818c28d8299e1848d987ce08f6aca21c508
font_02_sfnt_off000106b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B3 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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