Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b8e4b6ac8a8cba5…

MALICIOUS

PDF

76.3 KB Created: 2021-06-02 12:00:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0a22c499867409b34fe265a57d9c7c4 SHA-1: 2ab4b7b3ffba7b29dc0365f401cf019508ea8fef SHA-256: 2b8e4b6ac8a8cba500ed7b86365222e0b42142da887acce68a487ac4ccedceb8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL disguised as a search result, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

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://archism.ru/pbw?utm_term=how+do+you+find+acceleration+due+to+gravity
    • https://tizepuwi.weebly.com/uploads/1/3/4/3/134367539/1dfde.pdf
    • https://wikefazopikevi.weebly.com/uploads/1/3/4/7/134715570/lomerirositon-gitijab-likawobotarif.pdf
    • https://static.s123-cdn-static.com/uploads/4444356/normal_5fdd920571d5b.pdf
    • https://cdn-cms.f-static.net/uploads/4386618/normal_6028fabed43f4.pdf
    • https://cdn-cms.f-static.net/uploads/4462073/normal_606d285ab4f0b.pdf
    • https://figajusare.weebly.com/uploads/1/3/4/6/134610400/1528134.pdf
    • https://static.s123-cdn-static.com/uploads/4527747/normal_6006b9a72f568.pdf
    • https://static.s123-cdn-static.com/uploads/4459482/normal_5ff00a57c19df.pdf
    • https://static.s123-cdn-static.com/uploads/4422894/normal_60036bbee1a51.pdf
    • https://jasesokotu.weebly.com/uploads/1/3/4/4/134499989/5455467.pdf
    • https://cdn-cms.f-static.net/uploads/4470542/normal_6030d4fece75e.pdf
    • https://static.s123-cdn-static-d.com/uploads/4391314/normal_60b63a6275bb2.pdf
    • https://static.s123-cdn-static.com/uploads/4446263/normal_6009263feab3d.pdf
    • https://static.s123-cdn-static.com/uploads/4367648/normal_5fe3f2f71ca9f.pdf
    • https://cdn-cms.f-static.net/uploads/4402933/normal_601579e6e2dbc.pdf
    • https://cdn-cms.f-static.net/uploads/4374199/normal_606c72a473139.pdf
    • https://lisofagan.weebly.com/uploads/1/3/4/5/134598873/jifajadapad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://liguduper.pbworks.com/f/simple_bible_commentary.pdf
    • https://uploads.strikinglycdn.com/files/c8ee9f7a-a144-4820-ba53-f40f8d88a113/pelizufafekufizowagagom.pdf
    • http://zexowisam.pbworks.com/w/file/fetch/144426711/3_branches_of_government_4th_grade_lesson.pdf
    • http://wefolevemud.pbworks.com/w/file/fetch/144481086/ticket_to_ride_europe_how_to_play_video.pdf
    • https://uploads.strikinglycdn.com/files/2a18ed43-f1df-47f3-8a59-abdbc5d70660/diana_gabaldon_outlander_series_books.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea72.bin
efe6e681d9d8118a491c3c2e2af0eff23935bd3a87cbc70fbb6c046b425e39f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA72 5228 bytes
font_01_sfnt_off0000fc68.bin
b9c7e0793f52be537024a3cd0f7617dcdeb83b74cc2d3630353448bee1cbde19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC68 11500 bytes

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