Malicious PDF — malware analysis report

Static analysis result for SHA-256 15f6613cfdfe8612…

MALICIOUS

PDF

33.4 KB Created: 2021-07-05 18:22:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ac45a5f2ed5bb7682862f4c087a95933 SHA-1: 09b7272c3742e38398ba3e539d79f50e64ce99b4 SHA-256: 15f6613cfdfe8612ad4938398b2bae01f478225cb507812d28b47be838a31fd0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of offering free in-game currency for Roblox to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or downloads. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/free-rs-999-999-999-on-roblox-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/hack-fhantom-forces-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/cheat-bar-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/como-hackear-roblox-con-cheat-engine-68_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/pubg-uc-kart_GM1330123889.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-by-changing-the-code_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-hack-in-roblox-with-bad-words_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-btools-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-advertisment-youtuve_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/working-at-a-pizza-place-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/best-free-full-lua-and-lua-c-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC7 22888 bytes
SHA-256: 22099dd6a57b801d303bccc9400cd3ce96b62b5f99103fb0ff7eb636b6bac3b0
font_01_sfnt_off00005e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E44 18812 bytes
SHA-256: 89945c6977a24b994f8b3b1021f34844f0d7d063976d2575f4e82ffe4066ae16

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