Malicious PDF — malware analysis report

Static analysis result for SHA-256 393ffff49e851dec…

MALICIOUS

PDF

78.0 KB Created: 2021-03-03 17:48:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9b99889d66a0d94eca4a8a992f4d9fed SHA-1: 24bf920d57695bf20870df4bd05576b0fc771a39 SHA-256: 393ffff49e851dec231ac8382a42d8953f214771ea4875bed4bfbc1dd24d9a17
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to be a lure related to dietary information, intended to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=what+to+avoid+on+a+wheat+free+diet PDF link annotation
    • https://cdn.sqhk.co/ruradavi/irjiih6/disneyland_park_anaheim_buena_vista_street.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/how_to_upload_garmin_maps_for_free.pdfIn PDF document text
    • https://cdn.sqhk.co/felinavaw/ijGiaS0/35327889930.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/71534834012.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503524/normal_5ff497ae16cef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444874/normal_5fcf6a21cfd97.pdfIn PDF document text
    • https://cdn.sqhk.co/xojoweva/nza8Uib/carpet_cleaning_vacuum_rental_near_me.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/hamlets_mill_book.pdfIn PDF document text
    • http://nadipewin.mywebcommunity.org/41787875791.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_6028f4909bef3.pdfIn PDF document text
    • https://cdn.sqhk.co/fexonawizoz/eigidji/delugeluje.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/how_to_troubleshoot_website_performance.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412592/normal_5fe612f101ff8.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/wazotojemov/27032046398.pdfIn PDF document text
    • http://pujumek.myartsonline.com/best_forex_trading_app_for_beginners_download.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/what_is_a_mri_guided_breast_biopsy.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/32602741714.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/national_archaeological_museum_athens_guided_tour.pdfIn PDF document text
    • http://merovuditipin.onlinewebshop.net/what_is_the_best_portable_home_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/civics_chapter_2_class_10_question_answer.pdfIn PDF document text
    • http://firiwigisu.atwebpages.com/can_you_play_baldurs_gate_dark_alliance_2_on_xbox_one.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_off0000e756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE756 4736 bytes
SHA-256: c7d6eae7111652c1f88568ff4c8ae6d37e9183fb53f195764ab54b12dc105fbe
font_01_sfnt_off0000f77a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77A 10840 bytes
SHA-256: f1694e365e12b81c7364e2fdce266bb584471e0b625a2309729b75e661439b5a
font_02_sfnt_off00011c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C92 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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