Malicious PDF — malware analysis report

Static analysis result for SHA-256 469092aa8391f45e…

MALICIOUS

PDF

87.9 KB Created: 2021-03-10 04:18:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b36286572e5a42afbe31cba49f097314 SHA-1: a7977b32189ddf5d78e245ed7997b2f666a4276e SHA-256: 469092aa8391f45e28d63b319ea4a7569348fef2fba8f97d19e72a9ddf80502f
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan-like behavior. It contains a large number of external links, suggesting it's part of a link farm designed to redirect users to potentially malicious websites. The primary URL observed is https://botokaw.ru/123?utm_term=excel+forecast+sheet+greyed+out, which is likely used to lure victims under the guise of providing information about Excel functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/123?utm_term=excel+forecast+sheet+greyed+out PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369647/normal_601621a6e2b69.pdfIn PDF document text
    • https://cdn.sqhk.co/penutizufib/tXxcgj6/29739531686.pdfIn PDF document text
    • https://cdn.sqhk.co/gegenosuzun/hhhfggU/imposter_among_us_wallpaper_2020._6._9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468551/normal_5fe6ee8b3164b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497093/normal_603852dd014fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385417/normal_5febbeef6d7c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420756/normal_6018b1998b4ad.pdfIn PDF document text
    • https://cdn.sqhk.co/jisanipu/71jdNhh/devil_ninja_fight_apk_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374519/normal_5fce0eb2c10b1.pdfIn PDF document text
    • https://danifiwap.weebly.com/uploads/1/3/4/5/134585556/jirani_wesefurijep_winesosa_wabijave.pdfIn PDF document text
    • https://basavorulifa.weebly.com/uploads/1/3/4/8/134899730/tijusowadanar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481820/normal_600fe05f30ad2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479705/normal_5ffc9de4ea9a2.pdfIn PDF document text
    • https://cdn.sqhk.co/vutazekerubu/jiFy0Qc/carx_drift_racing_online_xbox_one_car_list.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456134/normal_5ffbebbc9dbf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415546/normal_601081b5ab004.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450512/normal_5fcc1595a4ee3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lovetijif/23664222558.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/yajurveda_sandhyavandanam_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/pubazoxagaxameditowena.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/85683747240.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D35 5140 bytes
SHA-256: 04b818aa3fbdb5bf0a500c1ed7d0fca1e9c4acd38464b3953b329401d8dbdaff
font_01_sfnt_off00011ec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC8 10904 bytes
SHA-256: f869a6ed5387c392737f7477054c31a386323b1aa1f194479148c334d336cca6
font_02_sfnt_off0001440b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1440B 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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