Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32c55bf83fa7e92…

MALICIOUS

PDF

73.8 KB Created: 2021-03-05 02:54:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 9b497d1e71422c8332a68cceee1d6df4 SHA-1: e7ae7f3092b1a295c834dfa5b8667a42a1cd2273 SHA-256: c32c55bf83fa7e92ed6554467499c008e75946c51a014538b9d44d1277befca9
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://midufefew.ru/123?utm_term=windows+7+secret+commands PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449768/normal_6015fe9bf2fb6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384822/normal_5ff21fd39c5e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_60365d075acc9.pdfIn PDF document text
    • http://rixivuk.iblogger.org/lg_inverter_direct_drive_washer_top_loader_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369656/normal_60014f2d8f9d8.pdfIn PDF document text
    • https://leponinidokawe.weebly.com/uploads/1/3/4/5/134502666/libofixab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451760/normal_5ff248d7c631e.pdfIn PDF document text
    • http://sosiwuro.iblogger.org/asuran_tamil_movie_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/cpuKhjh/who_is_the_infographics_show_writer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412909/normal_5ff2c790144a7.pdfIn PDF document text
    • http://detaxinema.22web.org/aarambam_cut_song_isaimini.pdfIn PDF document text
    • https://cdn.sqhk.co/fixuzigetir/tA9jcgf/download_game_craft_island_survival_3d_mod_apk.pdfIn PDF document text
    • https://roviselazadavuw.weebly.com/uploads/1/3/4/0/134040559/mawodenepinabo.pdfIn PDF document text
    • http://vofidiporalives.22web.org/kinetic_energy_depends_on_both.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vupafigimewex.rf.gd/30528729848.pdfIn PDF document text
    • http://jilusizupofa.epizy.com/6599559280.pdfIn PDF document text
    • http://desibevazivoxan.rf.gd/cereal_box_template_microsoft_word.pdfIn PDF document text
    • http://sojatuduko.epizy.com/36028912652.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_off0000e3aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AA 5240 bytes
SHA-256: bf984e60505695a60f39936bdb49b7b7bc01bc94fc208986bd4bac3235dd8227
font_01_sfnt_off0000f57a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57A 10864 bytes
SHA-256: e4783d8a624a8387ac75e7a6069e30164f6ff2107630e92521e14d2e65a9be0a

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