Malicious PDF — malware analysis report

Static analysis result for SHA-256 87f1d2bdd3bf21ff…

MALICIOUS

PDF

33.7 KB Created: 2021-06-25 21:30:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8623ab4a9ebae0b6e21e4e27eac5e0f5 SHA-1: 076ab374bcfa3bf517097cc66f95dbf18fbad0e4 SHA-256: 87f1d2bdd3bf21ff366325e2890ee5322e4ce2c85c5dd1a777c6030ee5ed802f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox. The document body and heuristic firings confirm the intent to lure users to these malicious URLs, which likely serve as a gateway for further malicious activity such as malware downloads or phishing. No scripts were extracted from this sample.

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/in-roblox-how-do-you-get-free-robux-game-hack In PDF document text
    • http://zarinnameh.ir/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-use-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/sk8-hack-roblox_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-gift-cards-for-free-online_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/hack-scripts-for-roblox-electric-state_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-use-speed-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-using-script_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://zarinnameh.ir/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/reddit-coin-master-free-spins_GM406889139.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_off00002cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAB 22032 bytes
SHA-256: 31e4aeb40313f10b6bd0fe4e8d16d34ce0baf7d037108dc343363fd5c573b010
font_01_sfnt_off00005d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D93 19388 bytes
SHA-256: 85211509af8af14139cb1eeb2e9b963c5bf203f62c71fae1c7839d4f256f7df7

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