Malicious PDF — malware analysis report

Static analysis result for SHA-256 938d3a08a12887b8…

MALICIOUS

PDF

72.8 KB Created: 2021-03-14 00:28:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1a9b0deda798a2ae5c3de5846334f5c6 SHA-1: daba66f078ea359db1e80b67f4542a4c111cedec SHA-256: 938d3a08a12887b8d61b79ccf24229edf3e6c13168dd222e60733d1b98016cd7
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=anthem+bcbs+of+georgia+pharmacy+prior+authorization+form PDF link annotation
    • http://world-wildshop.com/telagiwevikesakajnwuhx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365539/normal_5fe3e831ad624.pdfIn PDF document text
    • http://imedo.ru/best_bus_games_for_androidg0q4w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502245/normal_601e4015a7c87.pdfIn PDF document text
    • http://fruit-ita.fun/985680194150vnh1.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/mafavuzenoliki/xuxobaxefixijuwozakazan.pdfIn PDF document text
    • https://f74ea38a-ab8d-49a0-8d31-9a1d7ce64423.filesusr.com/ugd/5ceade_0abd8462bd37463bb2066ea7d2327164.pdf?index=trueIn PDF document text
    • https://6346cca1-8be9-442e-91e0-e35201572fa6.filesusr.com/ugd/a8c077_00cec0f2218c4d62baf75ab1a3fb3fad.pdf?index=trueIn PDF document text
    • https://d12d056d-c16f-42d2-bb36-b12dbd13f8e5.filesusr.com/ugd/a2005d_0f533fb152bb4e50aa504a3c6cba4585.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/mary_scissor_sisters_piano_sheet_music.pdfIn PDF document text
    • https://8d6920c1-aef5-45ed-b1a0-e693d63948fb.filesusr.com/ugd/0a593f_d306019437394c1f9d60fd7bb60fb6a8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/beyblade_burst_god_3ds_rom.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/39770660282.pdfIn PDF document text
    • https://4541bc1c-e35c-4de3-bb44-1f53c3e1a56d.filesusr.com/ugd/68f66e_f8421486f83c4dffa2c54cb8a9eeb7d3.pdf?index=trueIn PDF document text
    • https://0a37a3d5-a0bf-4e77-8ff5-6127fd08aefa.filesusr.com/ugd/6046c9_6f836d9840e9454e8dec566d438ee39b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/javascript_new_date_to_string_format.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/descargar_app_cartoon_network_para_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/ballistic_coefficient_calculator_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/25515331315.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/tamiya_king_blackfoot_upgrades.pdfIn PDF document text
    • https://6d4cd3b7-91e9-43ac-92b9-205473f1e50d.filesusr.com/ugd/28146e_8acbc5b03fbd4bb09e5e3e973cc1673f.pdf?index=trueIn PDF document text
    • https://1628ddcf-e301-416d-9649-d9339b85441b.filesusr.com/ugd/0b1079_fb538801361e4ecda6322696519acaff.pdf?index=trueIn 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_off0000dbf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF6 5680 bytes
SHA-256: 9721e8404ece42059fb7e561b3f3b556fe1d5d31f7302825897dddd5a12a06d3
font_01_sfnt_off0000ef33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF33 10588 bytes
SHA-256: 69c358c57d3a45ff781ccebb6ef93c0cb087fd7a36deb78d5e131c4c4725c1d8

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