Malicious PDF — malware analysis report

Static analysis result for SHA-256 50cc2012b4561fec…

MALICIOUS

PDF

33.3 KB Created: 2021-07-03 18:09:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ac98cd3b5b3566139391654855ed1f0 SHA-1: 53d6a52f28eb26cd729628a469526c79f3b1ea23 SHA-256: 50cc2012b4561fec4c6141d604de070502fb827cabd2175dbd1d11aeb0e0ed5b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The ML classifier strongly flagged this PDF as malicious, and heuristic rules identified it as a game hack redirect lure. The document body, though partially corrupted, contains text related to these lures and embedded URLs, reinforcing the phishing and redirection attack pattern.

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.tw/app/479516143/toolbox-for-mcpe-game-hack In PDF document text
    • https://www.sd-olimp.hr/files/pubg-uc-redeem-code_GM1330123889.pdfIn PDF document text
    • http://sd-olimp.hr/files/hackear-gta-5-updated-roblox_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/god-roblox-hack-script-fe_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/how-to-hack-levels-dragon-ball-z-revalations-roblox_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/policesim-hack-roblox_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/free-hoodies-roblox_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-robux-net_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/roblox-hack-for-meep-city_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/robux-survey_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/my-robux_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_off00002ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECC 21976 bytes
SHA-256: 3cb7af35fb4dbfa2136b5b0f19983fd69145c6d8fefa5386a9316f44434306c2
font_01_sfnt_off00005ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF3 18392 bytes
SHA-256: 6731796fcc3540c9bce8cf4082208439aef10811acb01390060e5f462b6e1492

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