Malicious PDF — malware analysis report

Static analysis result for SHA-256 317bff0427a75829…

MALICIOUS

PDF

34.3 KB Created: 2021-06-30 00:22:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3b4770f2fa7a1d27bb24ac698bcdf00a SHA-1: 6ad6fc02623059c01e0d2a6b29bed6c78e98019f SHA-256: 317bff0427a758297a5a602a2015d4b3d27b9fec5e0074250fcb23293125a0b7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector, disguised as game hacks and generators. The ML classifier also flagged this PDF with high confidence. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users to malicious infrastructure.

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/esp-x-ray-roblox-hacks-game-hack In PDF document text
    • http://library.ulb.ac.id/repository/comment-hacker-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/error-connecting-pipe-3-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/bear-mask-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-do-you-get-free-knives-in-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/funneh-roblox-simulator-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-no-human-verification-2021-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-money-cheat-download_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/create-a-free-roblox-picture-for-yt_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-do-you-get-bloxburg-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/tiktok-free-online_GM835599320.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/pubg-uc-qiymtlri_GM1330123889.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_off00002e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9A 22644 bytes
SHA-256: ba6a402545008cc824df908974b7d4745afc9cf89abba472288c126d1f8d1511
font_01_sfnt_off000060fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FC 19012 bytes
SHA-256: fb78c57c4e1cef0836040e981ac8a90a7307b858753ab901114872a32fccf58c