Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa28e8e9025ea84…

MALICIOUS

PDF

77.4 KB Created: 2021-04-02 04:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 3cc361ea8575d76224704c0789eced31 SHA-1: c03ae521442a1b535dfd24415a38532e3338d8d7 SHA-256: 7aa28e8e9025ea84a0ad000c489a1898b8e19ef9a110612dad7613967d5a7ab9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URIs and the nature of the PDF content suggest it is designed to trick users into visiting a malicious site, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jacksth.ru/strik?utm_term=how+to+size+mini+split+heat+pump PDF link annotation
    • https://dopilefuma.weebly.com/uploads/1/3/4/7/134733068/bixutotekomim-muzetuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446152/normal_5feb15b32f4cc.pdfIn PDF document text
    • http://dihtyar.online/belatimijipogutubapobebuta5c7j.pdfIn PDF document text
    • https://cdn.sqhk.co/sawapevodef/i7dhehi/satie_vexations_piano.pdfIn PDF document text
    • http://zagavexakagin.mypressonline.com/53915961057.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwovado/geSzFRu/50721773969.pdfIn PDF document text
    • http://usacarins.com/xezowepugovibabuvapiwipuzobp9.pdfIn PDF document text
    • https://rikekipodoze.weebly.com/uploads/1/3/0/7/130776447/8095806.pdfIn PDF document text
    • http://coupons2020.info/munchkin_dungeon_rules_erratao7gol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500201/normal_5fe51ebccb90c.pdfIn PDF document text
    • http://fagilef.getenjoyment.net/31941965889.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457311/normal_5fd03baa66de9.pdfIn PDF document text
    • http://getyourscore.info/fallout_4_loot_how_to_change_load_ordervb6y8.pdfIn PDF document text
    • http://larebalin.mypressonline.com/the_story_of_edgar_sawtelle_movie_cast.pdfIn PDF document text
    • http://card2card.live/970805452000zykm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483602/normal_60663f73b69e4.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/DChcEhf/one_picture_is_worth_a_thousand_words_example.pdfIn PDF document text
    • https://darenufu.weebly.com/uploads/1/3/1/4/131438483/nexebe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379046/normal_6024896b745cb.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/xidulumexi/togejuxowiwarawonadiranu.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/16667734092.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/letter_writing_templates.pdfIn PDF document text
    • http://desovizipelo.onlinewebshop.net/how_to_draw_born_haber_cycle.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/325449645.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/95274062784.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_off0000f1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DF 5068 bytes
SHA-256: ae302524588d49cf1157abd4ed273149330bd8dda318dd8d4cd2aa8c2e2fc5cf
font_01_sfnt_off00010309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10309 10828 bytes
SHA-256: d90d59d0b6d34c65cbcd882680ba3b6085176a22a8e19be2290ce51e7ec2c345

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