Malicious PDF — malware analysis report

Static analysis result for SHA-256 599c0732afb935e9…

MALICIOUS

PDF

47.9 KB Created: 2021-06-09 14:18:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: de93558650a0422401c3b0b6930dec20 SHA-1: bf8c9b5c6efb0e5015ae884f9f8ad22c21355918 SHA-256: 599c0732afb935e9fc73318b418b45caf7bcdddaaea111763dec92f2a9f8017f
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 redirector infrastructure, specifically disguised as 'free game hacks' or 'secure payment' pages. The document body, though partially obfuscated, contains text related to these lures. The embedded links likely lead to further malicious content or exploit kits, aiming to compromise the user's system.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/secure-payment-with-roblox-free-game-hack In PDF document text
    • http://altc.de/images/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://altc.de/images/olzer-free-robux_GM431946152.pdfIn PDF document text
    • http://altc.de/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://altc.de/images/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://altc.de/images/how-to-get-free-elite-on-roblox-murder-mystery-2_GM431946152.pdfIn PDF document text
    • http://altc.de/images/code-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://altc.de/images/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://altc.de/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://altc.de/images/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://altc.de/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://altc.de/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://altc.de/images/free-roblox-hacks-free-robux_GM431946152.pdfIn PDF document text
    • http://altc.de/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://altc.de/images/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://altc.de/images/master-free-spin_GM406889139.pdfIn PDF document text
    • http://altc.de/images/how-to-get-a-free-tail-on-roblox_GM431946152.pdfIn PDF document text
    • http://altc.de/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://altc.de/images/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://altc.de/images/no-human-verification_GM431946152.pdfIn PDF document text
    • http://altc.de/images/free-coins-coin-master-blog_GM406889139.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_004_off00004e5f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E5F 25988 bytes
SHA-256: 6f41fc62b0097e54152a7b127a07d7de9ecc3ff3c0e1b51baaf99a619194710f
font_01_sfnt_off0000885c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885C 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9504 19500 bytes
SHA-256: 81d6638c49c16ab8c75df32b2ea4bc14b714dfa0ce1de021cc5322cf9f8db9e6

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