Malicious PDF — malware analysis report

Static analysis result for SHA-256 1458d6ac217f142e…

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 12:37:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7b598da60050b848dc5fbf2e2f155541 SHA-1: 913b2d2aa3ba075b8fba85fb9462fd5c526cac0c SHA-256: 1458d6ac217f142ecb4b13ddb69ccf62942215d0e522c21287b29cb32de3d5d0
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and free currency, a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of external URI heuristics further supports a malicious intent. The document body, though partially garbled, contains references to game hacks and the primary malicious URL.

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.tw/app/406889139/coin-master-2021-free-spins-link-blogspot-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-survey-or-password_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/yummers-free-robux-obby_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-accounts-with-bc-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-use-pabestin-codes-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-password-required_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-dragon-ball-super-2-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-jailbreak-speed-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-flee-the-facility-cheats_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-items-in-the-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/pastebin-unlimited-free-robux-and-obc-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31C5 23188 bytes
SHA-256: e827e1e4966faa36545898da21a4ce9013898e66b0831151be0dba400f594264
font_01_sfnt_off00006625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6625 19036 bytes
SHA-256: 19b793172c3e4e67372f0948662efcb12590f1ebd1aedebdca9f554a15f0a298

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