Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf3222081e6ed7b6…

MALICIOUS

PDF

35.5 KB Created: 2021-06-18 09:25:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a1f083d028262c4bed019bbc6fa95bd8 SHA-1: 6c7e1f05577d4a03f99b21edf14e033e672415f9 SHA-256: bf3222081e6ed7b61e8b541914114c04a0f0c9ac4c6ce0a622d66e8cf1bf37fc
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, specifically promoting game hacks and account recovery lures. The primary malicious URL identified is http://netcdn.co/app/431946152/find-hacked-roblox-account-back-game-hack. The document's content and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery.

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/find-hacked-roblox-account-back-game-hack In PDF document text
    • https://perpus.uwhs.ac.id/repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-jailbreak-hack-download-noclip_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/copyright-free-roblox-template-shirts_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-hack-roblox-highschool-money_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-mster-free_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/a-bizzare-day-hack-script-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-spins-coin-master-app_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_off000032b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B9 22404 bytes
SHA-256: aaf1db890c835b64f27087ba3234d13a42de0a526163135875711845542abc11
font_01_sfnt_off00006500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6500 19356 bytes
SHA-256: 43a9bb00e2aa6001d29f6fa982b85c411fc62c2fb826e8175c4d4d8767e49ad7

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