Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c97b49d999aee84…

MALICIOUS

PDF

34.3 KB Created: 2021-07-01 14:32:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b511f4a697347386385c868e75e1ee1e SHA-1: 70a49cbf14d6749b7bbcfc18555b5db78aefcfe9 SHA-256: 3c97b49d999aee840478adb0481efe6cc5531dda529f78c9ceafb9eaaf921b61
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external URLs that are associated with malicious redirectors and lures for game hacks and in-game currency. The document body and embedded URLs strongly suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment. No scripts were extracted, but the overall structure and content point to a malicious intent to redirect users to potentially harmful sites.

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/roblox-hack-easy-download-game-hack In PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/rewardrobux-com_GM431946152.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/how-to-get-free-robux-simple_GM431946152.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/how-to-get-free-robux-hack-pc_GM431946152.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/whats-robux_GM431946152.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/how-to-hack-someone-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/free-robux-2021-no-survey-or-verification_GM431946152.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/roblox-redeem_GM431946152.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.alloywheels.in/uploaded_files/userfiles/files/how-to-get-free-robux-in-apple-ipad_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C8 21584 bytes
SHA-256: 6cf09ae480c13570e306b9c38974069a13cf836892d17b9c1adb20ad7740637e
font_01_sfnt_off00005fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FED 19344 bytes
SHA-256: be420596af742ec81881697c24bd01f88dcbb9079b02a69fb563edab36aff25b

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