Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d5fe8a02d1b338…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 07:50:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d8212ad428340878d1039c4e1e0934b5 SHA-1: 876a3f079c0d03181af8256ea97580891d608569 SHA-256: 27d5fe8a02d1b338ef4d6cd728cbbb934d17dd6646a4bd09fd8ada67682c111c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free in-game currency, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent. The document likely serves as a phishing or malware distribution vector, using a game-related theme to trick users into visiting a compromised site.

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/roblox-free-t-shirt-on-sale-game-hack PDF link annotation
    • https://goodtools.tw/upload/files/synapse-roblox-exploit-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-market_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-scp-site-61-admin-cheat_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-into-your-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-codes-november-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/cheat-roblox-laxify_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-your-robux-back-after-being-hacked_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-apps-that-work-2021_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_off00002e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E26 22644 bytes
SHA-256: 9fdcf20f4db0342f3f405f4cb0f9bef3823e21266371d2d2300c04cc4e48d0c2
font_01_sfnt_off00005fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEE 19040 bytes
SHA-256: 89a22eeb71a95dd7481ab55e820188cb99979eac2dba620584e3c7d40060c82a

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