Malicious PDF — malware analysis report

Static analysis result for SHA-256 da3deb117bbef2c0…

MALICIOUS

PDF

71.5 KB Created: 2021-04-07 02:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 5d48ac0feb1f633939fd239f06926ca4 SHA-1: e60bd099750aa3a690203a5b39075624ae6a9977 SHA-256: da3deb117bbef2c0c7b8b2bcac2d3c9bb0434615342c3eeee0e64da19e92b4d7
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect the user to a malicious site, potentially to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jumiwimov.ru/award?keyword=apcolite+premium+emulsion+pdf PDF link annotation
    • https://cdn.sqhk.co/jisaside/ngiiaif/cytosine_is_complementary_to.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/d9ighfz/casey_at_the_bat_commonlit_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/rovifatira/jejuihS/rush_limbaugh_show_live_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/jlyidfS/f1_manager_2020_series_8.pdfIn PDF document text
    • https://cdn.sqhk.co/gunuzuli/jivZLhg/mamobonabirelekikiwotiw.pdfIn PDF document text
    • https://cdn.sqhk.co/pewesopefim/hYREicq/muralubowido.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/vs1jghe/turboprop_flight_simulator_3d_mod_money.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/ihsLjjQ/pixel_car_racer_story_mode_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/zerumowo/cgf7Fji/miratikaregufinamap.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/ZgcjiEY/16013081016.pdfIn PDF document text
    • https://cdn.sqhk.co/pawapoma/hjfhjFp/riwabakaxudibarovobesoxud.pdfIn PDF document text
    • https://cdn.sqhk.co/novoganug/yjfIieQ/93426107854.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/petuzutemixuvod/kizugadirajogutililurefep.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/84871563210.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/10058608651.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/6653817674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a36977a-334c-47ac-937f-611bec7d0a89/wubafotovoted.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/pubujiwafekaranutoma.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/ps3_controller_not_charging.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/34997990768.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/discourse_on_the_method.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/kaximatadafuxozojor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c025164e-1023-466b-95d8-faf17417a58d/madiwabidugodumaju.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/clubbers_guide_to_ibiza_99_tracklist.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_off0000db7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7E 5080 bytes
SHA-256: 71160b02a380c8d3bf580b4ce58e5be630f665ebe9a4fefdc27688bcdaa63aac
font_01_sfnt_off0000ecb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB4 10532 bytes
SHA-256: f39d3e7186fbeca2085baddfe2df8d76746f2aacff4bd2a06d38218685446de7

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