Malicious PDF — malware analysis report

Static analysis result for SHA-256 0352a921f36b55cd…

MALICIOUS

PDF

78.2 KB Created: 2021-03-03 21:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 90fb24f740035a3b7e3572771561ffa6 SHA-1: cdf1cc808b463e890bb091be777f2d1defa5b65e SHA-256: 0352a921f36b55cd4e8dfc9ec8defb9c4b593b8a991f903116ff6ee3cf327d91
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that mimics a search query, likely serving as a lure to a phishing or malware distribution site. The presence of multiple embedded URLs and the nature of the ClamAV detection (Pdf.Phishing.Trojan) strongly suggest a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wb?keyword=how%20to%20make%20a%20frame%20bunk%20bed%20tent PDF link annotation
    • https://cdn.sqhk.co/nagotumubo/dhheqie/majafukemivodex.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/ujdnhdX/us_cat_population_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/fhbgdIf/xepadisapesagulapeviboba.pdfIn PDF document text
    • https://cdn.sqhk.co/gabunufu/vBVifjf/57614382729.pdfIn PDF document text
    • http://vivekawiga.sportsontheweb.net/3083507288.pdfIn PDF document text
    • https://cdn.sqhk.co/tuledapozato/j9gdmij/t_i_vua_bong_da_2020_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/ijgjcyg/mekaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://namepafubi.atwebpages.com/sazaxizonisenominani.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/87218591679.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/scripps_spelling_bee_school_pronouncer_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/crazy_craft_modpack_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/77561160834.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/why_is_my_fios_router_blinking_blue.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/caperucita_roja_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/xuwanuj.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/83276190036.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_off0000f4f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F3 5100 bytes
SHA-256: 3933613e9572ba19eea503ae4aae93b0c0382cc7dc7f8c61324d60123dbcfea6
font_01_sfnt_off00010647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10647 11232 bytes
SHA-256: c4536ea3b7e0baae77e1633d578433330c70c7b7d72ea8e1a36d3da300e01333

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