Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cda0f8c6b123ea3…

MALICIOUS

PDF

45.6 KB Created: 2021-06-09 08:43:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1b596a9cda299568e5235f8d5314b7ce SHA-1: 32ec871c84fcffe4d156bcc34be822ef3a52593f SHA-256: 5cda0f8c6b123ea3a3142c8c5e01c45dbc07353e8eef2ceed9d8a7a894bf8517
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure URL is https://netcdn.tw/app/431946152/roblox-phantom-forces-hack-2021-game-hack. The document body and heuristics indicate a social engineering tactic to trick users into clicking these links, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/roblox-phantom-forces-hack-2021-game-hack In PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/pubg-uc-ykleme-bedava_GM1330123889.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-girl_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-dumb-smart-cheater_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/robux-get-com_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/hacks-para-roblox-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/pubg-uc-number_GM1330123889.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-2021-free-spins-link_GM406889139.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_004_off00005179.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5179 25440 bytes
SHA-256: cb784457359e8d1d5279f59a0af5d33b0aca99c5b2575c2ee0a81b94bb331309
font_01_sfnt_off00008c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5B 19432 bytes
SHA-256: 29af573bebfe9b53ed773bda2811be9a840a27485c6581feb1c24d6fc58e7d32

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