Malicious PDF — malware analysis report

Static analysis result for SHA-256 b015421a669a5416…

MALICIOUS

PDF

34.8 KB Created: 2021-07-09 10:38:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d74d93468d3f4bc9d306cd4645191158 SHA-1: 234f75d33d7d4c9b00660ddf8c9403d981aaf738 SHA-256: b015421a669a5416378fe83603534eab65d24b6b2169e4ab8a537865a2a11c42
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on them, promising free game currency or hacks. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a social engineering attack.

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/431946152/my-roblox-avatar-game-hack In PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-waiting-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/hack-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/hack-strucid-stop-start-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/robux-giver_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/reddit-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/roblox-hacked-client-windows-10_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/jailbrak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/how-to-hack-in-roblox-jailbreak-2021-february_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off000030f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F3 22296 bytes
SHA-256: 4e6c812cbf3929f849b02e3cd4317dabf19767095563a01d311cc3bd1e37be12
font_01_sfnt_off000062be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BE 19080 bytes
SHA-256: 8169d8a73c365ca890cab1d906a29b59b15447ff342c47cf9f7f7fe4f88c0bcd

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