Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf07d93fe1db5679…

MALICIOUS

PDF

44.7 KB Created: 2021-06-09 01:36:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0ce311491e6f02c9ca50cd641221ebce SHA-1: c32ac9df17c1fabc5443d32793489877ac1b6b36 SHA-256: cf07d93fe1db5679cec5ee9a356ff7ce5373c6e239abec8120077bda3aeb7898
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • 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.
  • 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 https://netcdn.tw/app/431946152/cheats-for-roblox-unlimited-robux-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roebucks_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-group-botter_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/robux-now_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-roblox-acc_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
stream_004_off00005650.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5650 29272 bytes
SHA-256: 2d6103e936a8b8d6566a488f3e497a81fcf524b9f9e32db80d421d1343aff28d
font_01_sfnt_off00009aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA9 8376 bytes
SHA-256: 092b7a11ef2af93d0b61b37032e6f669359ea7bc5bcb682d43a712f599a5ca39

Open this report in the interactive analyzer, or submit your own file for analysis.