Malicious PDF — malware analysis report

Static analysis result for SHA-256 39ba20d0eb74d536…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 21:04:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 46230e49f7851c43345fd1a181090c3b SHA-1: d01c256658daa8df9db9389de8c64928aed8f34d SHA-256: 39ba20d0eb74d5364b9380d28cfbc8f7f85efea9187b33a1a27e001833d8648d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to known malicious redirector infrastructure. The document body and heuristics indicate a lure for free game currency or hacks, specifically mentioning Roblox and Coin Master. The embedded URL is likely intended to download a second-stage payload or redirect the user to a phishing site.

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/free-roblox-gift-cards-live-game-hack In PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/working-redeem-roblox-cards-free-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/how-to-hack-any-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/hack-vara-volar-en-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-emotes-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/roblox-hack-facebook_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-strategy_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/can-i-get-free-money-on-roblox-adopt-me-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/unlimited-robux-hack-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-online-games-roblox-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/collect-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-robux-is-a-scam_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/cheats-for-good-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-roblox-clothes-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_off000030d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D2 22348 bytes
SHA-256: 8992e67f73bdefa0e200dc7a1230c65470c5f5e9e890de14ea6f9e949b824991
font_01_sfnt_off0000629c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629C 19164 bytes
SHA-256: 9ffdef90b1313acdde84d4d2be408c3e9c9abd0ec8438318608966d35df64e25

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