Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a9be219522c226b…

MALICIOUS

PDF

242.5 KB Created: 2021-03-22 02:32:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 34145e4650f10dd2c00e5d7ae4bbf9f4 SHA-1: 6245a506a4303c2fa519dcf5cdcc0b65b499be8c SHA-256: 9a9be219522c226bc58adadfb30a5fbfdd3027a03008c199f40987a7a419e6a8
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest an attempt to exploit the user's trust in PDF documents for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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://nipisod.ru/wix?keyword=tikz+pgf+examples PDF link annotation
    • http://tb-films.ru/ccna_todd_lammle_2nd_editionp1dmk.pdfIn PDF document text
    • http://ketotreno.buzz/renuevame_acordes_y_letraqfgbo.pdfIn PDF document text
    • http://academic-club.ru/virtual_piano_sheets_giorno_themehk8f3.pdfIn PDF document text
    • http://manipiso.iblogger.org/what_is_a_chaos_coordinator.pdfIn PDF document text
    • http://reawolt.online/que_haria_maquiavelo6v0b7.pdfIn PDF document text
    • http://simopuvoramawu.mywebcommunity.org/27647353232.pdfIn PDF document text
    • http://ontrade.top/2004_dodge_ram_1500_quad_cab_rocker_panelsx8g3x.pdfIn PDF document text
    • http://desajegurake.scienceontheweb.net/beps_action_plan_8_10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zirafefovijab.epizy.com/palozagonusufulal.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/sosasemirujikezug.pdfIn PDF document text
    • http://divupalol.epizy.com/73138055787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9465bad7-30e8-4c60-ba00-8f8eee804f42/88385718598.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/equipment_qualification_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/zaneralatasilulejemej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eaa9570-dee4-4e6e-aebf-29d439fc57d1/stihl_sh_86_c-e_27.2cc_petrol_leaf_blower_vacuum.pdfIn PDF document text
    • https://cd753cf5-d90a-4073-9c55-931a76e81761.filesusr.com/ugd/8826df_913da2aca6aa485bbc94e0f9075f8318.pdf?index=trueIn PDF document text
    • https://8ee4d174-735f-4cd7-9396-c3a65dbcc337.filesusr.com/ugd/5ac313_e88341b97ad14e9ea530a4c1532ef2fb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b86682d4-2736-4c8c-96c7-b84540c42fee/math_formula_in_hindi_class_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a04aa0d1-35df-4b43-8474-fb8a74a1cdf7/epson_surecolor_p800_ink_refill.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/76733786289.pdfIn PDF document text
    • http://mifivanotelo.rf.gd/buwomutev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/771a20fd-0fde-4b11-9def-b108add6ffef/how_can_you_tell_how_many_atoms_are_in_a_molecule.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_off00037ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37ED6 5256 bytes
SHA-256: 2a07edff53807af371c940243138407ce6035be3570b033fd57a7db42338ff69
font_01_sfnt_off000390c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x390C5 12424 bytes
SHA-256: 944769856391c0c05e9a1c96487feee6e2acb8f8411eabaa7abd4a94b7da8d45

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