Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e246fac4b3eba7b…

MALICIOUS

PDF

41.2 KB Created: 2021-04-28 08:03:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7dfcb0b3de0a1e53009f77399bca9faa SHA-1: d6c4de025c809de3b4773263492bba22d2a90cba SHA-256: 5e246fac4b3eba7b576a91d0de1c7c06bc906ed606ffb5ef1326699b73b0394d
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that lead to known malicious redirectors, disguised as 'game hacks' or 'Robux generators'. These links are presented with urgency and call-to-action phrases, aiming to trick the user into clicking. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 https://netcdn.xyz/app/431946152/adfly-hack-robux-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-games-on-roblox-rpg-rainbow-swords-rpg.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-notifler-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-vip-server-ro-ghoul.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-download-no-sign-up.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hack-on-roblox-free-money-vircle-simulator.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/mediafre-roblox-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/rbxoffers-free-robux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-speed-hack-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-prison-life-v202-hack-download.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-change-your-name-on-roblox-for-free-2021.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
stream_003_off0000409a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x409A 27020 bytes
SHA-256: bd44f71f1c49406a8be019b93878b5b88c0709e6a4b2b392ee1e9c7923cf4cfe
font_01_sfnt_off00007dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC9 18676 bytes
SHA-256: 89be41c9dfed0981bc1d4444d19e2ebce43ac6720c74422e7454f10e6c8aaef2

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