Malicious PDF — malware analysis report

Static analysis result for SHA-256 b72496723955b6aa…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 09:45:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 70210e30b09d4cba1497b14de758e398 SHA-1: 148e838ebfd9e7b6835e7ff573c45f10029a92fb SHA-256: b72496723955b6aa479109cb6c0c0bb9d23e3b1f1587f9f7f2ee8177d8e14962
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to a redirector URL, masquerading as a game hack generator. This indicates a lure to trick users into visiting a malicious site, likely for credential harvesting or to download further malware. The ML classifier strongly supports the malicious nature of this PDF.

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.tw/app/431946152/how-to-hack-levels-in-roblox-naruto-final-bond-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-cod-card-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/best-roblox-hacking-software_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-obc-on-roblox-working_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cell-can-we-get-free-robux-dbz_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cheat-engine-bypass-roblox-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/bux-life-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/generator-for-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/feed-your-pets-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-studio-someone-hacked-my-game_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-fly-hack-in-tower-of-hell-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/bux-today-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-your-roblox-account-to-get-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-cheat-engine-tables_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/collect-free-spin-linms-coin-master_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_off00003385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3385 21828 bytes
SHA-256: 4ab0afcbc5cc9ea60fa76a06acd97172aae0a2299bcd4f2327c16957e78be277
font_01_sfnt_off00006389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6389 19452 bytes
SHA-256: 8a0c11a72a6156f60a28dffaaad9a2e030b04aafb8cce1e83ffcb1fae83ec687

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