Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e458188e096c480…

MALICIOUS

PDF

34.1 KB Created: 2021-06-28 01:59:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 08abf6bbd1ab5509ab7b82a51bfe2f30 SHA-1: 7893f250f729a5311ea90f43c48fcb40c233075e SHA-256: 3e458188e096c480cb8528dfe934ec6dc4efdccc449d66b8a7f469bef466e770
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a malicious redirector, masquerading as a generator for free game items. The ML classifier strongly indicated maliciousness, and the document body confirms the lure of 'Roblox Free Emotes'. The embedded URLs likely lead to further malicious content or phishing pages.

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-free-emotes-game-hack In PDF document text
    • http://repository.unla.ac.id/repository/free-obc-for-roblox-august-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-roblox-girl-outfit-codes_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/unlimited-robux-hack-download_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-do-you-get-free-robux-on-xbox-one_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/get-free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-royal-high-cheates_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-roblox-robux-generator-activation-code_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/youtube-live-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/anonymous-hacker-script-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-hack-cookie-clicker-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_off00002f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0A 22160 bytes
SHA-256: 2ab173823db1715b55a70b88bd167cd6f9b3639cff28a3a9791328089aca997f
font_01_sfnt_off0000604d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604D 19016 bytes
SHA-256: b2cc7f550bd9ec53b0f99297662aefe885025a789c5936e187ded527857bd08b