Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b34b960dc14a8a3…

MALICIOUS

PDF

35.8 KB Created: 2021-06-29 17:05:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 660e71c52e3bac1cf0dca11e9e638268 SHA-1: d2e40097a538aaaf845cacac330eac0d8d31d6de SHA-256: 7b34b960dc14a8a34cf492ac502b2bac3d4788ee5c9c1746dd276d984294641d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on a URL that promises free game currency or hacks. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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-robux-promo-code-hack-game-hack In PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/i-got-free-robux-doing-this_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-unused-noob-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-roblox-clothes-list_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/fast-easy-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-immortality-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-cruise-ship-tyccon-albatros-free-script_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-bc-free-download_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-hack-to-get-nightblade-in-murderer-mystery-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-hack-the-northern-frontier-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-robux-hacks-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-admin-hack-gui_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-get-free-robux-on-ipad-2021-no-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/robux-app-free_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/robux-hack-generator-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-dll-roblox-exploit-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_off00003461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3461 22404 bytes
SHA-256: d2552cd951714a91286bf2ead1581269280b05c9f4a58601f07e0fb6a146f08e
font_01_sfnt_off000065f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F6 19384 bytes
SHA-256: b03017db6d4e7a6841c32bf2413906fc5732c07e88fe2b7dd20e123cee24e36a

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