Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfddc7cd4440d36e…

MALICIOUS

PDF

41.9 KB Created: 2021-05-16 16:32:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9aba4263aa5a092a7c2f777609e53ca1 SHA-1: 791e22d35eba468513a4e9143eeeb816a003eb79 SHA-256: cfddc7cd4440d36e44141edd3169ee8ebf31aa032ca9d54f02d216ee1474a4bb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising free game-related content. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-font-free-game-hack In PDF document text
    • https://pagadder.com/images/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://pagadder.com/images/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://pagadder.com/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://pagadder.com/images/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://pagadder.com/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://pagadder.com/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://pagadder.com/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://pagadder.com/images/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • https://pagadder.com/images/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • https://pagadder.com/images/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • https://pagadder.com/images/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • https://pagadder.com/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://pagadder.com/images/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • https://pagadder.com/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://pagadder.com/images/114-4-hacks_GM479516143.pdfIn PDF document text
    • https://pagadder.com/images/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • https://pagadder.com/images/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://pagadder.com/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://pagadder.com/images/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • https://pagadder.com/images/free-spin-coin-master-game_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
stream_003_off00004a0b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A0B 24904 bytes
SHA-256: f718a6c0bf28b182a58ced78f0d0abe4c0e99c63f79c03b7953f01803df826ba
font_01_sfnt_off00008308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8308 17712 bytes
SHA-256: 48684535abb05df1a4efb13fd94135dee175bf6b61229e4eaa41ff3ed13e5a52

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