Malicious PDF — malware analysis report

Static analysis result for SHA-256 64ff95be80038658…

MALICIOUS

PDF

65.9 KB Created: 2021-02-15 16:38:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80424e7ae93a353cafe9b40f3a6f3d67 SHA-1: 55c737c1e8f0d7981f841ff460a778d0e0a45589 SHA-256: 64ff95be800386580c20abb1d0a66e93d9ad6f1a863ca6f06dc8c6be6b145f45
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, potentially exploiting PDF vulnerabilities or serving as a lure for further compromise.

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://druttle.ru/wix?keyword=surgeon+simulator+demo+unblocked
    • http://risurevisawibe.iblogger.org/judunozumari.pdf
    • https://zesalogerevuj.weebly.com/uploads/1/3/4/6/134684883/xerikoje_firoke_muxomuzotixedej.pdf
    • https://static.s123-cdn-static.com/uploads/4374359/normal_5fc715379cdb3.pdf
    • https://static.s123-cdn-static.com/uploads/4499636/normal_6008f4524030d.pdf
    • https://cdn-cms.f-static.net/uploads/4469106/normal_5fd92a7e003eb.pdf
    • https://cdn-cms.f-static.net/uploads/4368977/normal_6017a47c843ef.pdf
    • https://cdn.sqhk.co/dafisuwikib/iegflha/electric_hand_drill_press_stand.pdf
    • https://jozinuzo.weebly.com/uploads/1/3/2/7/132712000/1651131.pdf
    • https://static.s123-cdn-static.com/uploads/4501231/normal_60027c10a9f39.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kokesatodixon/play_xbox_one_on_android_tablet.pdf
    • http://joriboka.epizy.com/ultrasound_guided_femoral_nerve_block_video.pdf
    • https://s3.amazonaws.com/wujixus/bode_plot_using_matlab.pdf
    • http://jivobolalozula.rf.gd/57685674778.pdf
    • http://sevezogare.rf.gd/stone_crushing_unit_project_report.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_off0000c3fc.bin
bc3a0605eb28e14e2c121438041c6e91404a5b8005b58690c967af5466ed7e53		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FC 5568 bytes
font_01_sfnt_off0000d6cf.bin
fcbbd0aaaba65b6c33d21bc939eb37e4f4d70450c387f3d7e4bde3ca3bc9068d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6CF 10604 bytes

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