Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bfa1f114979415d…

MALICIOUS

PDF

45.5 KB Created: 2021-05-17 22:15:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 75f6b287369e4b1c39a088c651d7fa1d SHA-1: 7a3b4fdfb5960654e1db162b099dcf2eff99e1e1 SHA-256: 9bfa1f114979415dc5de578ec03af51a098b798ef2b85baa632beab8c8eb4403
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The ML classifier also flagged this PDF as malicious. The presence of multiple redirector links suggests an attempt to lead the user to a compromised or malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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 https://netcdn.xyz/app/431946152/how-can-you-get-robux-game-hack In PDF document text
    • https://heimatverein-oberlangen.de/images/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/robux-gratis_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/grabpoints-robux_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • https://heimatverein-oberlangen.de/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004975.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4975 24348 bytes
SHA-256: e59b40ab39bc1c20b7202d0edaa23770d493c4d18e9acf7b546040b10379322c
font_01_sfnt_off0000817d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x817D 3656 bytes
SHA-256: 1709558ea199fdc4e1715a6fb8dc01ec7fd41fc4d404269676a25d37e9ad5c8c
font_02_sfnt_off00008e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3D 18508 bytes
SHA-256: e001fb7f5401862ae7bfe8451ef812ade6eb76ff5b39a99ee1f5160965f9e068

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