Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f50bdedf935ca9…

MALICIOUS

PDF

34.5 KB Created: 2021-06-28 17:21:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a33c6afa7927ed28257a5c281c1b9c36 SHA-1: a8656cc84255cd351fd4ed6274389002578d67f2 SHA-256: f7f50bdedf935ca9f53ce9d24899001582897fa67ec227a6d213a4db90979da0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks for Roblox and Coin Master. The document body and embedded links strongly suggest a lure to trick users into visiting these sites, which are likely designed to deliver malware or conduct phishing. The ML classifier also flagged this PDF with high confidence.

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/roblox-hacked-sitted-game-hack In PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-roblox-accounts-with-robux-2021-for-android_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-halloween-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-phantom-forces-all-guns-free_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/can-you-buy-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/robloxcom-robluks-for-free_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/hack-phamtom-forces-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/the-community-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/god-mode-dll-hack-roblox_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_off0000312b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312B 21932 bytes
SHA-256: e4c1006ba9e9c44d0419ff9cae8a64539f678384674766b539e97c60a8db694a
font_01_sfnt_off000061b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B4 19052 bytes
SHA-256: c1cc7d162bad2195e99eac465d43b6873147b0f9841006da43ba76582b3ce63c

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