Malicious PDF — malware analysis report

Static analysis result for SHA-256 12e256a740fe8c92…

MALICIOUS

PDF

88.9 KB Created: 2021-05-23 06:46:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f1849e062ccd386d6e38f5f5809d8234 SHA-1: 50ebee6b07af3e59a4ed017bc5647e8e9afbc132 SHA-256: 12e256a740fe8c92ee20528870275d7938bbbe05bdc76318a9130d88a9071675
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or malware distribution lure. No scripts were extracted, but the embedded URI is the primary indicator of compromise.

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://leonvi.ru/strik?utm_term=la+era+de+hielo+3+pelicula+completa+en+espa%25C3%25B1ol+youtube PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4374852/normal_5ff166030b0f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383792/normal_602a413aa4437.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376105/normal_604d2a344bf8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_602b4fcbc1949.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393346/normal_602e2e794b3bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448744/normal_5fc7405a63ce5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385620/normal_604fca77c0320.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490121/normal_604a47e3bdb86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418000/normal_604fde387a8b6.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/xotomisen/how_many_ounces_is_5_medium_sweet_potatoes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/405ef65a-af60-485d-8859-70c875de14c7/hound_of_baskerville_full_movie_in_telugu_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/zebubujujizotenazemiv.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/iimb_placement_report_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23baa00c-94f6-4527-a594-afd19e351643/how_to_connect_brother_hl-2270dw_printer_to_wifi_without_cd.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/jevinuvulubegamozavo.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/losurefixefinobomodavofi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4efc8b0-44a9-4912-8f60-d3839143cd4c/vicks_humidifier_pads_walgreens.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/afk_arena_mod_apk_god_mode.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/ethical_hacking_book_2020_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/dasaributuluxa.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_off00011596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11596 5872 bytes
SHA-256: 6bb0647676def586bbe58336a1230e6f18d9612763b26305f588d943d01e9d76
font_01_sfnt_off00012927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12927 13036 bytes
SHA-256: f5e73199f534ccecabba3565e14afe8240c942e178b105d1e546b14f1835d905