Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d5c5f0fe6377a8…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 02:27:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9909e2a8008cbc1fc43c02783ee62a30 SHA-1: a9ddaee44c909a318a0f38ff42e7ca6a43b43ebc SHA-256: 22d5c5f0fe6377a8f8708701ce9f8115ea3e0b983040f830611731fe78445dba
82 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 4

  • 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.
  • 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.co/app/431946152/apk-hack-de-roblox-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-login-page-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-hack-in-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/earn-free-robux-by-doin-tasks_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-scamer_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-i-get-robux-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-hack-days_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/cheats-infinte-jump-roblox-fe2_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-server-hack_GM406889139.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_off0000300e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300E 22324 bytes
SHA-256: d03e882a17132ee856515e0334ee06a607b554292aac08cab65d250d4909eb56
font_01_sfnt_off000061b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B5 19000 bytes
SHA-256: af5499fe6469b94911c96b480ff9dac354523e4b39a857a5e052098d1e32c468