Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b1a93ad11d55b61…

MALICIOUS

PDF

45.7 KB Created: 2021-06-09 12:24:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8f5196feb95dcb89acd3b6134a9d7ef2 SHA-1: 7f4edcf23a23de959c164d1008a0583c1817a0b5 SHA-256: 2b1a93ad11d55b610992ccd83cb513cf9b7be9a838432dc34da39dbff3b80fb8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators'. The document body and embedded URLs suggest a lure to download potentially malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URLs and heuristic firings are sufficient to assess the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/island-royale-roblox-hack-esp-script-game-hack In PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/mcpe_GM479516143.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/robux-adder_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/gamesofficenet-hack-coin-master_GM406889139.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_off000053ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53BA 25476 bytes
SHA-256: 1b0c918d0f60a5358d99079444485dd5492baed4e695146d0bfaf1cb6c54e1bc
font_01_sfnt_off00008dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DBB 18936 bytes
SHA-256: f6102cb9e11e90219cab778ec3aaa5c0f4415176494ac38e99a590a5cbbe19e1

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