Malicious PDF — malware analysis report

Static analysis result for SHA-256 c64e6a77d9015554…

MALICIOUS

PDF

395.3 KB Created: 2021-03-16 01:07:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 433f304974fcfd5a6a327836dcb7d2c6 SHA-1: d93da73957a19bff63b00a85097204f8862104d1 SHA-256: c64e6a77d90155545daed2bf97d8dd1715bf7a0cec4940a5986a87525cf2ffbc
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that mimics a search result for a book, suggesting a social engineering lure. While no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used to download further payloads or redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://baarspo.ru/award?keyword=bloodlines+book+1+pdf+free
    • https://cdn-cms.f-static.net/uploads/4380072/normal_5fd5f3e4f0935.pdf
    • http://zaxevef.getenjoyment.net/39750372375.pdf
    • http://fafijitesulexiz.mygamesonline.org/gate_2020_chemistry_syllabus.pdf
    • http://votixibutiro.medianewsonline.com/garmin_rino_650_wont_charge.pdf
    • http://xesapuwax.mywebcommunity.org/marantz_sr5007_service_manual.pdf
    • http://mavigawika.scienceontheweb.net/omnitech_shredder_will_not_turn_on.pdf
    • http://sugameloxufe.mywebcommunity.org/mbti_chart_percentage.pdf
    • https://static.s123-cdn-static.com/uploads/4469116/normal_60045e6f1ba31.pdf
    • https://cdn-cms.f-static.net/uploads/4425209/normal_6021652d75f2f.pdf
    • http://ranupila.mywebcommunity.org/aladdin_broadway_musical_script.pdf
    • http://biniwitovo.mywebcommunity.org/99528644128.pdf
    • https://cdn-cms.f-static.net/uploads/4379236/normal_5fd76b60c1adf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wufuxabarerinuw.epizy.com/tatonavifogovumilivejet.pdf
    • https://s3.amazonaws.com/faduxodiwo/31335623618.pdf
    • https://s3.amazonaws.com/zidenigad/angle_bisector_worksheet_answer_key.pdf
    • https://s3.amazonaws.com/salade/dujate.pdf
    • http://tifavamifikas.myartsonline.com/magic_school_bus_castle_episode.pdf
    • https://s3.amazonaws.com/tifuwuw/geography_ib_syllabus_guide.pdf
    • http://judomoposigu.rf.gd/20815529276.pdf
    • https://s3.amazonaws.com/sefipa/93674541924.pdf
    • http://sisawujeza.rf.gd/card_design_background.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_off0005e737.bin
a02a4c021f215d7c38a2eea5d122464e004871d829a9e95a49ed2719afd1a68d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E737 5128 bytes
font_01_sfnt_off0005f8bd.bin
fed9d9a050749a9173395171369108a192d1161228aa445d1f4d5d5147be5799		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8BD 10908 bytes

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