Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff934c747e0fdac8…

MALICIOUS

PDF

34.6 KB Created: 2021-06-28 01:41:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 62912e244bad4e13bce6c6e407a50105 SHA-1: 2b145296a7a23240c3d7db65a2a26719a6f9e781 SHA-256: ff934c747e0fdac8d6d22aa8e544575ca8ee0b763b794be93e3fe5b676d950ca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, disguised as a lure for game hacks and free currency. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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-codes-get-robux-game-hack In PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/how-to-hack-legends-of-speed-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-face-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-robux-promocodes-no-hack-free_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/how-to-hack-a-person-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-speed-cheat_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-build-a-boat-for-treasure_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-robux-with-fakename_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-robux-robux-king_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-password-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-hack-robux-infinito-download-2021-pc_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-old-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-admin-commands-free_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/get-robux-for-free-with-out-choice-of-getting-extra_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_off0000314a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314A 22092 bytes
SHA-256: 72c8ae05cd49434726eb6b374781086b627ee70a0f55dcdb999c18830e243920
font_01_sfnt_off00006271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6271 18996 bytes
SHA-256: 01c7bd5b73e971577e64fdb1b6a249ed31bb824b043d638e7960b5448569fa50

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