Malicious PDF — malware analysis report

Static analysis result for SHA-256 cccfa7b3c7d1eac7…

MALICIOUS

PDF

43.6 KB Created: 2021-05-15 08:05:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 132fd6a8ab31a4f102bc0391d70c0bde SHA-1: 7fc58e49e6cce484042803dc39aae7668c341618 SHA-256: cccfa7b3c7d1eac756a112e132d87a1120a92ebee7676a44a9614a4a216f7e0e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising free game currency or hacks. The heuristic firings indicate that the PDF is designed as a lure, likely to trick users into visiting malicious sites. While no scripts were extracted, the embedded URLs and the nature of the lure suggest an attempt to lead users to a site that may host further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-robux-without-doing-anything-game-hack In PDF document text
    • http://fishtech.is/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/give-me-robux_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://fishtech.is/images/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/how-to-get-free-robux-without-verifying-2021_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
stream_003_off00004ac3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC3 25580 bytes
SHA-256: a88240e604b68642a5ba116053388dbf1c2cb28b8fa4a1476f4ba75486f79a4d
font_01_sfnt_off00008535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8535 19240 bytes
SHA-256: e1e4d521198b5ef2bb2d2ba3e061f6fd747e7988b39df69dcb6ecbaf810b6a5c

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