Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfe997610d1b7079…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 10:46:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8bbfc9492e67732eaf48ecfe6003b873 SHA-1: 2d6f6326e34489accdd75500c8ae06858d57b946 SHA-256: bfe997610d1b7079ae8762eef3d86570eac0e4bb2fd4baff4bafaf724073eda0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.tw/app/431946152/does-roblox-premium-expire-game-hack PDF link annotation
    • http://103.40.122.33/akasia/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hack-roblox-pizza-place_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-clothes-boy_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hectic-plays-free-robux-form_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-hack-menu-pc_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-anything-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-sound-effects_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hacking-of-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-saut-infini-cheat_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/paginas-para-hackear-en-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-hack-bleu_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-com-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/comment-cheat-sur-le-jeux-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3114 21944 bytes
SHA-256: 67bd91532234b7b29c9389631436520bf9e067a3ff844f856f377e35f29c3a04
font_01_sfnt_off0000617a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617A 19504 bytes
SHA-256: 8f595c9c1f801d7d93a693aeb20e2773da8eb8fd3d5bcac2863721cedfa624cd

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