Malicious PDF — malware analysis report

Static analysis result for SHA-256 077f1a2d6d0c5424…

MALICIOUS

PDF

81.1 KB Created: 2021-02-10 02:39:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: ccf51d029a6054c655058688ff1e9b7c SHA-1: d64740000be70b0201cb59607cda7c1908c8763d SHA-256: 077f1a2d6d0c5424e1d082f675eca35015fd1a6280677a14b0977b2969e18918
96 Risk Score

Malware Insights

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

The file is a PDF that contains multiple embedded URLs, many of which are suspicious and point to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site or download further payloads.

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://bologen.ru/aws?utm_term=cours+anatomie+appareil+urinaire+pdf PDF link annotation
    • https://cdn.sqhk.co/wituruxa/aheGUE5/neo_geo_mvs_buy.pdfIn PDF document text
    • http://opssmall.space/ballistic_galvanometer_notes2jkkx.pdfIn PDF document text
    • http://cparta.moscow/bagotubxz39d.pdfIn PDF document text
    • http://pumba-timon.space/lozudidupasosoz7kxkm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371010/normal_5fca70c9ed975.pdfIn PDF document text
    • https://cdn.sqhk.co/fewibefanid/giUPihV/54449422017.pdfIn PDF document text
    • http://healthit.space/6779612895s7i0w.pdfIn PDF document text
    • https://cdn.sqhk.co/fokigegoma/YNTKYOs/streamlabs_chatbot_currency_setup.pdfIn PDF document text
    • http://itwow.info/mma_fight_live_updateslybi0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446259/normal_5feb049187d29.pdfIn PDF document text
    • https://cdn.sqhk.co/rudixika/jgggLCI/1952465905.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373768/normal_5ff0450189d29.pdfIn PDF document text
    • https://cdn.sqhk.co/nafusomo/g9hdjfa/battleship_north_carolina_museum.pdfIn PDF document text
    • https://cdn.sqhk.co/popaxutu/if9mmge/radadiberuwuxokevo.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/gfhjiyg/thrifty_shopper_ithaca.pdfIn PDF document text
    • https://cdn.sqhk.co/fafegatoko/Zhfxqja/mx_off_road_mountain_bike.pdfIn PDF document text
    • https://cdn.sqhk.co/rubutemoxe/RTgdZgh/letterboxd_top_250_narrative_films.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e63e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63E 5092 bytes
SHA-256: 58da7f013ad0a645c4ec45c08b6e8c8a95196c7b5acd2514ff24caf12d403cec
font_01_sfnt_off0000f772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF772 13080 bytes
SHA-256: 7b6d525e5a829aa3ef87ec1f11582ce70d4415e81f3c87ca5f7cf717414fcd6c
font_02_sfnt_off0001209a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1209A 16096 bytes
SHA-256: 292b67320f20e7e38814323bff47001ccb55b5eebb397aea8a254f3e91f57b87

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