Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff232e6d5b56188a…

MALICIOUS

PDF

34.3 KB Created: 2021-06-25 22:28:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 329cdb2e9e347cbf7f69f3a76beb6bd2 SHA-1: 0e5cec49f5d65b0649f9330b9bdd9bae9a7ff465 SHA-256: ff232e6d5b56188a34bec2cf17098bf57911348b5724974083e281baeb2536e5
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, disguised as offers for free gift cards and game hacks. The heuristic firings indicate that these links are part of a known malicious redirector chain. While no scripts were explicitly extracted, the nature of the PDF and its embedded links suggests an attempt to exploit vulnerabilities or trick the user into downloading a secondary payload, likely through a client-side exploit.

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/free-gift-card-roblox-2021-game-hack In PDF document text
    • http://digilibfisip.uwks.ac.id/repository/get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/robux-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/saber-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-make-a-free-shirt-in-roblox-no-bc_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-hack-site-roblox-unlimited_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/hacks-in-mining-sim-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-jailbreak-hack-bypassed_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-items-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-generator-tool-download_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-gft-cards_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/what-are-some-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/ro-ghoul-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-fly-on-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/hack-anyone-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-for-samsung_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_002_off00002e17.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E17 22364 bytes
SHA-256: b22cbd977235d039bea78b0a22041998bb3210f21f0ab9aa72da1950a2601ae2
font_01_sfnt_off00005f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7B 19452 bytes
SHA-256: 9e9378d23c45d9667749668b040fe3978ba951a7c175fb3880716db1759ec6e5

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