Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e45ec405a1c2626…

MALICIOUS

PDF

70.2 KB Created: 2021-03-02 21:50:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 57ff8afbbeabad42ca1e5847e4108e11 SHA-1: 339a6ca0b85369d52656290209a4e3df728d43ce SHA-256: 5e45ec405a1c26260ec08042bd0ccdddd0b223b202c5b2c1228af876d009f03a
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'vilenefex.ru', which is likely a malicious domain used to host a secondary payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to a user manual, aligning with the phishing intent.

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://vilenefex.ru/wix?keyword=proform+smart+pro+2000+user+manual PDF link annotation
    • http://megantv.site/b_s_f_photo37goe.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefawoz/ibjho2A/eerskraft_apk_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/wanolugago/igIjhxd/6151997974.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/did9Dgf/claw_machine_arcade_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/mojekuvugise/hhohg0G/dibidanunonuzipususe.pdfIn PDF document text
    • https://cdn.sqhk.co/naxusepimosa/cgeBfig/hocus_pocus_t_shirt_uk_plus_size.pdfIn PDF document text
    • https://cdn.sqhk.co/welosezu/igNu1N5/media_markt_gutschein_osterreich_kaufen.pdfIn PDF document text
    • https://cdn.sqhk.co/fematixub/NEicjhq/53401539248.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/dumobekegudide.pdfIn PDF document text
    • https://cdn.sqhk.co/jesupasuzoku/ihibeid/pom_dog_live_wallpaper.pdfIn PDF document text
    • http://vijevejumozugim.sportsontheweb.net/why_does_ahsoka_tano_leave_the_jedi_order.pdfIn PDF document text
    • http://frukt.space/xefufudigawarodowe9pu9x.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/Oj8Bjea/king_of_dirt_mod_apk_rexdl.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/gixirojozogufux/altova_xmlspy_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/synonym_worksheet_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/exit_interview_template_fair_work.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_off0000d651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD651 5320 bytes
SHA-256: e2e103c400e46c6729e831ac73ae2d18f543cbf77b7ebe404bc14e8971363b19
font_01_sfnt_off0000e850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE850 10188 bytes
SHA-256: a26b2897fada3260c62b335f702c696efaae827384b4900470f2775147ee08f3

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