Malicious PDF — malware analysis report

Static analysis result for SHA-256 b07aa97792b494dd…

MALICIOUS

PDF

77.2 KB Created: 2021-05-09 21:46:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 74a33730fd4ba193321911220301c919 SHA-1: 17dc2e7384db619a4bc294d353743107dafbe97e SHA-256: b07aa97792b494ddca314b40789ee7dcad25c43806c2f088bf9ee9ba3ddb54d6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a movie title, suggesting a social engineering tactic to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=is+the+hunger+games+appropriate+for+a+12+year+old PDF link annotation
    • https://cdn.sqhk.co/mapelimujeku/ehjdjhA/movie_collection_software_windows.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420441/normal_6040c13e1eed8.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/ije1Mhg/lyft_driver_signing_bonus.pdfIn PDF document text
    • https://cdn.sqhk.co/rebawigabog/jiR9jha/pixel_art_color_by_the_block_number_app.pdfIn PDF document text
    • https://cdn.sqhk.co/dagozuwemep/jjiiaGk/ufc_news_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/mowogibewu/XXyKN6Q/lolaxif.pdfIn PDF document text
    • https://cdn.sqhk.co/pamavunawi/MicUuhf/22787200249.pdfIn PDF document text
    • https://cdn.sqhk.co/jedepazisu/jgOjd72/wefarojapibu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530171/normal_600e2ae2ab760.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/NgggiLs/interior_house_painting_cost_per_square_foot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d1cc94b-cb73-4e78-8a68-ab978cc31473/sidebetajugalaxesin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de4c3814-b548-430e-b18d-1f42d2358ba0/novemoporaxevavujonalad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fc7b649-3b1c-4c67-b313-f56776c9ccff/xevawejimeleregaverefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4157e5d0-63db-4468-9c3d-0054237951e1/matotupofisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/424e4700-5466-49cb-a534-3ffb6c4fe798/88017708198.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/tasupini.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94874614-2f9d-40f3-a476-6f1fc7bcc740/forelasepetap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2e650ba-6fb8-49de-9d83-b8913f369600/what_does_the_acronym_smart_stand_for_when_referring_to_smart_goals.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/best_bread_machine_recipes_for_diabetics.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/japafifotabasawe.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_off0000edf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF7 5676 bytes
SHA-256: 62bac89cfda32c679050438d7ebdc9f53a6ef9405ad40033bce502a7f1d8acd4
font_01_sfnt_off0001012a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1012A 11192 bytes
SHA-256: 1f4d89834ec5a9cce1f70290cea227f6b934ede729bbfcdcf35a531390296abe

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