Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cf9058fe8a37db7…

MALICIOUS

PDF

33.8 KB Created: 2021-06-21 01:59:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0cb38c502b2d2b5d394f7d51bc335b2a SHA-1: b543bdcce90a04c77e556294978f1674b9398126 SHA-256: 8cf9058fe8a37db74ea1911d9d99bf1ce9e318264934cb925c959320b38c4e3d
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as "free generators" or "game hacks" for popular games. The document body explicitly contains the call to action "CLICK HERE TO ACCESS ROBUX GENERATOR" and a primary URL, indicating a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded links strongly suggest exploitation or redirection to a malicious payload.

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-hoodies-roblox-game-hack In PDF document text
    • http://santeh-40.ru/images/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/roblox-hack-download-pc-booga-booga_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/how-do-doload-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/roblox-hoofer-art-hack_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/hack-homestread-roblox_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/mega-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-no-verification-required_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_off00002d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1B 22408 bytes
SHA-256: f2c2de5fd70a9f795df81fdcc4feda5759243dc477dc37c11137976d9600a30a
font_01_sfnt_off00005f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2F 18944 bytes
SHA-256: ed067573fda460b952a8b1fb4bda9b66f46dbf073c6e4d8bfd96145e120f6357

Open this report in the interactive analyzer, or submit your own file for analysis.