Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cac9157ba878cfa…

MALICIOUS

PDF

75.3 KB Created: 2021-03-20 22:54:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 926e66f8de955ba45b91a932210213e6 SHA-1: 9e8ad2c781dad0f7ff3bd38a58567269e66a9063 SHA-256: 7cac9157ba878cfaa61a01be47ec330fd6897db0743ddaac203aadcccdf679c5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/wix?keyword=google+sites+proxy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426687/normal_5fe660a06e105.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/descargar_libro_el_juego_de_la_vida_y_como_jugarlo.pdfIn PDF document text
    • http://viwafuxofiseko.getenjoyment.net/how_to_calculate_3_to_2_ratio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369336/normal_602c5632bb541.pdfIn PDF document text
    • http://fukerijinexin.mygamesonline.org/ice_breakers_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369495/normal_5fe79e59713c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366336/normal_5ff50820d10be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426549/normal_602d05fcb2c99.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405907/normal_6005ab969e9ae.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/gogoxowiniza/34967570311.pdfIn PDF document text
    • https://2a4b29e6-a790-453e-81e7-e8b9caf2c27b.filesusr.com/ugd/bf0735_ee5fb41c44f64f7abaa498ab12621012.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/nefowifalepirejija.pdfIn PDF document text
    • http://nudoritane.atwebpages.com/noun_and_adjective_clauses_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/fed_up_movie_discussion_questions_answer_key.pdfIn PDF document text
    • http://jatugeset.atwebpages.com/31245774896.pdfIn PDF document text
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_f0ee2f556b9e4923b4ff42139f5764a0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/28753383218.pdfIn PDF document text
    • http://jabejanaboz.atwebpages.com/what_is_the_great_awakening_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/16958850416.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_off0000e813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE813 4976 bytes
SHA-256: 2bbdeea59b07bf35b13c8fb5030efd3080c13733a1fdf8a32ed770476737870b
font_01_sfnt_off0000f926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF926 11464 bytes
SHA-256: 12fa1d35e0d883cf1ae3c03032b0540d12ae5980b7d995dba98b5302f00d6c82

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