Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4f53970c9d82c66…

MALICIOUS

PDF

34.0 KB Created: 2021-06-30 13:22:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 87b267dcadebb1d563a62261498c6de2 SHA-1: 51fc9e056812b856e038d54b4574aca3871b24d9 SHA-256: c4f53970c9d82c667d53ceb7a7a02de10dbc386816e6460fcd4dc6dc28d878c6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that lead to a known malicious redirector, disguised as offers for game hacks and free items. The primary lure is the URL http://netcdn.co/app/431946152/can-you-trade-free-accessories-on-roblox-game-hack, which is designed to trick users into clicking through to potentially harmful content. No scripts were extracted, but the presence of malicious links and the lure content strongly suggest a phishing or scamming attempt.

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/can-you-trade-free-accessories-on-roblox-game-hack In PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/hacks-para-roblox-descargar-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/are-pubg-uc-cheap_GM1330123889.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/robloxs-got-talent-cheat-tuto_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/roblox-free-no-virus_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/roblox-legends-of-speed-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_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_off00002ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAD 21948 bytes
SHA-256: 7c785b33efeb29f3df2544dc4fbe95a2468a3c57c8ac89149ab68a6ae08f494e
font_01_sfnt_off00005f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F27 19248 bytes
SHA-256: fd8b73697f8c6bc83473a60f9acaedd5d2ca13eacdd452e24db94e556f4fe092

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