Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e1c491e05049eb…

MALICIOUS

PDF

77.3 KB Created: 2021-03-18 20:23:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 7a729949826b748e3b32d34fdb67d8d6 SHA-1: ef66332804519bf1a34886b4e13756a50812dbff SHA-256: d2e1c491e05049eba5475c5a9e4e77e813b819ac2eecde862f3a2caf3ffea31c
104 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'gimoguvi.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gimoguvi.ru/award?keyword=canon+lide+120+specifications+pdf PDF link annotation
    • http://form-lnstagramverifiedbadges.com/24765096582lf530.pdfIn PDF document text
    • http://luxasireku.sportsontheweb.net/22679592851.pdfIn PDF document text
    • http://kazimibi.getenjoyment.net/do_you_lose_weight_being_vegetarian.pdfIn PDF document text
    • http://hamlikjorettoop.ru/how_to_set_a_tough_solar_illuminator_watchmxz68.pdfIn PDF document text
    • http://buloshnaya.site/what_are_the_four_theme_parks_of_disney_world674rt.pdfIn PDF document text
    • http://firstreadersclub.com/ernest_becker_le_dni_de_la_mort615y7.pdfIn PDF document text
    • http://wide-do.top/what_should_i_do_if_my_kindle_fire_wont_chargeqsdgf.pdfIn PDF document text
    • http://dujojiwasemob.mywebcommunity.org/letiwotefozemavofaxibi.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/bupaxomu/lagedunepabibevopogu.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/65577964032.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/22502760926.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/nilanisorubagin.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/christening_tarpaulin_template_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/19442037175.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/how_to_convert_a_standard_sim_to_micro.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/pifejowurapobe.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_off0000ef44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF44 5284 bytes
SHA-256: 766657a7e731d8fcc97f4a52842c7f595ab0892d056ec1a1a01c5950a981bb9e
font_01_sfnt_off00010154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10154 11348 bytes
SHA-256: 1e5a02bbc6edb6f8e2717e001abe744223ae0c2c6f46832bdfd6b2fe173e5d32

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