Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed17f27c9ccab33…

MALICIOUS

PDF

35.0 KB Created: 2021-07-09 11:17:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 898acd8338a77b8839a01b7f4e7a7781 SHA-1: e76eab5284c571f92087ee1ffb5f6035d2226f8e SHA-256: fed17f27c9ccab332779854071a862dd0ae5f92dd183c78e0bf7fe2db5e9302d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The heuristic firings indicate that these links lead to known malicious redirectors and are part of a lure for free game generators. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

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.tw/app/406889139/coin-master-hacks-and-cheats-game-hack In PDF document text
    • https://financia-business-school.com/static/upload/files/rbxnowgg-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/hack-dragon-ball-online-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-secret-code_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/mobihack-net-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-admin-in-roblox-games_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/hack-para-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/oprewards-login_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-exploit-scripts-free-download_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/ulgamesresourcescom-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-prison-life-20-hack-download_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_002_off0000311e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x311E 23300 bytes
SHA-256: b1828b6c4e7d44837a0e4454043befc4a13b41219eed949b1a011cf716627021
font_01_sfnt_off00006601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6601 18344 bytes
SHA-256: 601959c63278e09ff7943eb84b21d4673aa029b67c6276511e759d91a2ac5937

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