Malicious PDF — malware analysis report

Static analysis result for SHA-256 b65bf9aab06e469d…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 04:57:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6c121575f6ebdd1ee64ee7b8bd125381 SHA-1: f5f6f0fd43e01038a695b8fcd096e928284afcf6 SHA-256: b65bf9aab06e469d095713603dc74c6c1cefd1f9aaac1fdeae45084598dc13d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appears to be a game hack or free item generator. These links redirect to malicious infrastructure, indicating a phishing or scam attempt. The primary malicious URL identified is http://netcdn.co/app/431946152/prisonj-life-hacks-roblox-game-hack, which is flagged as a known malicious redirector. No scripts were extracted, but the document structure and embedded URLs strongly suggest a social engineering attack.

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/prisonj-life-hacks-roblox-game-hack In PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/how-to-get-a-free-knife-in-roblox-assassin_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/get-free-robux-pin-2021_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/roblox-t-shirt-adidas-free-galaixy-hoodie_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/roblox-outrageous-builders-club-for-free_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/coin-master-free-link-today_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_off0000330d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x330D 22772 bytes
SHA-256: 69f6f96d1d372c1a078b561acc4217dcd25f5798057d328e98bd49744ead8e91
font_01_sfnt_off000065dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DD 19116 bytes
SHA-256: 4e0855615ccf2f80fb579d6ea3863b978b5a01afe66d6319094cbdcf9c9d8f5e

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