Malicious PDF — malware analysis report

Static analysis result for SHA-256 85c48151a1d30e69…

MALICIOUS

PDF

91.8 KB Created: 2021-03-08 14:20:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: db2a157a950da8ba933142cb8f88e38f SHA-1: f1da64b5f208356623e1d5161d0fc7c1984cac72 SHA-256: 85c48151a1d30e696fae0cab1c598efafcf96122ce4749325648f0a77a7bef30
104 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as a potential phishing or malware distribution point. Heuristics indicate the presence of urgency lures, suggesting the document is designed to trick the user into clicking the malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=dont+fence+me+in+bing+crosby+lyrics+meaning PDF link annotation
    • https://cdn.sqhk.co/luzorisu/ifhaguz/comparison_of_nucleic_acids_worksheet_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/jaAsidS/my_new_baby_children_s_book.pdfIn PDF document text
    • http://setlyb.online/zetazovisozugolugevonudzraq6.pdfIn PDF document text
    • https://cdn.sqhk.co/nikofejujel/dhjOhaw/scan_to_android_app_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/Gfxwhic/48729131955.pdfIn PDF document text
    • http://freedate18.xyz/strangers_on_a_train_movie_plot0x8iv.pdfIn PDF document text
    • https://cdn.sqhk.co/kevamubeminu/gAjdgcY/animated_sticker_maker_for_whatsapp_ios.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420766/normal_5fe114d56b4fc.pdfIn PDF document text
    • https://cdn.sqhk.co/rufadexu/6viafia/98063623485.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487623/normal_5fe36e1aae571.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483388/normal_6007f441403e7.pdfIn PDF document text
    • https://cdn.sqhk.co/pumafuki/jhjzggM/35707497186.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sajezife/robert_kiyosaki_cashflow_quadrant_game.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/45499399348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1adba778-dce9-4e04-8928-82b4de476b7c/zurijan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aca7f29-a8c0-4568-b28e-c200b51814f1/does_the_total_gym_work.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/utorrent_free_for_windows_7_cnet.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/1073019985.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/83703201395.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104AF 5232 bytes
SHA-256: d554c782e215a58f7ed197a4ca58c47bc4d10a3bf6e0bfadcd306336f2dcf4ff
font_01_sfnt_off0001166d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1166D 11112 bytes
SHA-256: 442b20e31e919c2b93178abf666d3b42124615d3eb2db53df5b63f0b4cf486a4
font_02_sfnt_off00013c84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C84 16120 bytes
SHA-256: 184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832
font_03_sfnt_off0001516c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1516C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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