Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9526092be870775…

MALICIOUS

PDF

33.4 KB Created: 2021-06-26 16:52:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 255488e9ef857e2cee30ccfff3bb254c SHA-1: 5b60ddffb0ceca75a331ea9b6565f48fab6e1551 SHA-256: a9526092be8707758685fd192435ba5b75119ef9416d5cf21816c2e3fe87bed2
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as "free generator / game hack" lures. The document body explicitly mentions "free gear Roblox script pastebin" and "game hack", reinforcing the lure. The presence of embedded URLs and the critical heuristic firings strongly indicate an attempt to redirect the user to potentially malicious content, likely for malware distribution or phishing.

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-gear-roblox-script-pastebin-game-hack In PDF document text
    • http://studio-dentistico-fiume.com/files/dantdm-roblox-shirt-free_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/comment-cheater-sur-roblox-retail-tycoon_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/broken-bones-4-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/roblox-epic-minigames-hack_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/how-to-hack-my-roblox-account_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/how-to-get-seer-om-roblox-mm2-free_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/easy-robux_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/blox-fun-info_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/hack-for-roblox-bee-swan_GM431946152.pdfIn PDF document text
    • http://studio-dentistico-fiume.com/files/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.studio-dentistico-fiume.com/files/how-to-host-a-minecraft-server-for-free_GM479516143.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_off00002e13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E13 21392 bytes
SHA-256: 20d932d7a71b6eb7b6209ce1095032b4af88cf8450b227951a66f9c4d8cee3d3
font_01_sfnt_off00005d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D05 19204 bytes
SHA-256: 3a60f61ff63c1560da14fd618dee037620e54484ed04f620e22fe982cc5c2036