Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32f83aabcbf7637…

MALICIOUS

PDF

35.6 KB Created: 2021-06-27 23:34:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6026586d21b5f59bd322dd2236edba9c SHA-1: c85989c251bdc8d562de3c4dda802135fc7c312e SHA-256: b32f83aabcbf76379e8638353a3b3ed6231f9ec51a071b4d6ddb5812b4260e55
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links that are flagged as malicious redirectors, specifically leading to a lure for game hacks and free currency. The ML classifier also strongly indicated maliciousness. The document body and embedded URLs reinforce the lure of obtaining free in-game items or cheats, which is a common social engineering tactic to drive users to malicious 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/free-robux-promo-codes-2021-april-game-hack In PDF document text
    • http://library.futureuniversity.com/repository/tiktok-free-save_GM835599320.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/update-how-to-get-free-stuff-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/medieval-warfare-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-hack-2021-windows-10_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/rbx-free_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-robux-on-roblox-2021-without-waiting_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off0000315b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315B 22284 bytes
SHA-256: c188772186001f2b3ab6c8ecfbd77d1e4ca9dc38ed0387341f1105cd69133eab
font_01_sfnt_off00006331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6331 20076 bytes
SHA-256: f3bbe5d6865c12a426ac463051ba6f62c386a48b28093b6c34c60f9152fcd118

Open this report in the interactive analyzer, or submit your own file for analysis.