Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdcf8fac3a4b1889…

MALICIOUS

PDF

35.0 KB Created: 2021-06-18 15:03:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c52aca2b2ff6fb63bea8c649282abb72 SHA-1: a653332f53bc1c8962b351535d9b69f8c3ad7f63 SHA-256: bdcf8fac3a4b1889843ca927bb330205bec4bd4983a1361e6c26c8af8889181e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a known malicious redirector, masquerading as a generator for free in-game items. The document body explicitly mentions 'how to get free face in Roblox' and links to a URL that promises game hacks. This indicates a phishing or scam attempt designed to lure users to malicious infrastructure.

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/how-to-get-free-face-in-roblox-2021-game-hack In PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/fbchampion_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/roblox-crosshair-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/roblox-exploit-free-download_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/is-there-a-way-to-get-free-pokeballs-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/300-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-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_off00003139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3139 22360 bytes
SHA-256: 1ab4ff7a1b0f7cf472a2ee505603e8af69d3682490ed3b98dfcf90cbc4033401
font_01_sfnt_off00006333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6333 19136 bytes
SHA-256: 981e3f540db494a2425753e862674af5d135c2a344e5835262c29469449028cb

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