Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d31867c6fb856ae…

MALICIOUS

PDF

34.1 KB Created: 2021-06-28 11:01:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-14
MD5: e61322d310adcbaadd1bd6eceb1c7ba8 SHA-1: 1a4e317b5c99d12bf7275786e1de3d6359fad32a SHA-256: 0d31867c6fb856ae85c7c87b18cd83a5cfcad1279b595861a976e0959c5ae48b
160 Risk Score

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/free-robux-no-human-verifica-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-ban-people-on-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/money-hack-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-card-codes-november-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/what-roblox-games-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-hoodies-on-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/khaos-free-robuxcom_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-download_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-shirts-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-infinite-health-hack_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
font_00_sfnt_off00002f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8E 21988 bytes
SHA-256: 2f56132d1c38595932b9651fb54f1e51ecee492ee8b7586f0847fe80742e6e2e
font_01_sfnt_off00005fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC4 19228 bytes
SHA-256: d3fcb79468e9267964d818f6ca39e95e835142ed16a7da5252e5814c2a7ec6c8