Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fc032201e70bb1…

MALICIOUS

PDF

47.0 KB Created: 2021-05-12 06:28:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 98ca60b5d8594b719c8d33232c930f8e SHA-1: 5305c63e078d80d4147b3e3b61529975c4270513 SHA-256: 22fc032201e70bb1aeefa14735a35c24051408834e5b20c16e42153f9f62d829
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox. The document body, though heavily obfuscated, contains references to these lures and the malicious URL. The presence of these links and the heuristic firings strongly suggest a phishing or scam attempt designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/roblox-avatar-free-game-hack In PDF document text
    • http://dieter-sauter.com/images/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/add-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-cp_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/robux-no-survey_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-adopt-me-hack_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_off0000454f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x454F 26420 bytes
SHA-256: 24bf152a8febf4cd2dea2bf2b2bfaecebabe3056addda42c1d6afd819b1a460b
font_01_sfnt_off00008310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8310 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_02_sfnt_off000094f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94F3 18396 bytes
SHA-256: fabbc4d33b4fd44a10480a095a1b5872a696080c7c42ded8a290903470f97fc4

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