Malicious PDF — malware analysis report

Static analysis result for SHA-256 09f8e12430114280…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 05:58:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ab5ff989842bfe7166962f91727d5a89 SHA-1: 27ae195b72a251f9e607e70c06a43d3593d9b66d SHA-256: 09f8e12430114280ff3ee22e49a8e9aa4ec1ca7dc7d733bc235376d10cfffe18
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a document body that promotes game cheats and in-game currency, strongly suggesting a lure for users to download potentially malicious files. The ML classifier also flagged this PDF with high confidence. The primary IOC is the URL http://netcdn.co/app/431946152/roblox-cheat-engine-how-to-give-yourself-a-gear-game-hack, which is likely the download destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-cheat-engine-how-to-give-yourself-a-gear-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-gruns-r15-script-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-into-anyones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-granny-hacks_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-generator-download-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/rbxcity-free-robux-instant-pay_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/script-cheat-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-bc-on-roblox-2021-october_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-robux-hack-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/best-free-roblox-outfits_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_off000030d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D8 23148 bytes
SHA-256: 7afc49e352555c9ec79e7fd1afbb97f04c92dd8f03c67cb76e2d84d02059ff01
font_01_sfnt_off00006432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6432 19456 bytes
SHA-256: 5dfbdedf9128dbaf80b0831fb68601e375de7db99ccec7a76d84bbdfd7018222

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