Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac0a12a0d74f9968…

MALICIOUS

PDF

35.6 KB Created: 2021-07-03 21:50:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 10309e1ce2e8759fa5f92d222b3b4a8d SHA-1: dfb5bac839839d488dfc1fc59508f9bf5060f8a8 SHA-256: ac0a12a0d74f9968e2ee4049e10c1b9ca035f1e4e593371a00eec30792551090
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-severity heuristic indicating it links to a game hack redirector, specifically pointing to 'http://netcdn.tw/app/406889139/haktuts-coin-master-spins-game-hack'. This lure is designed to trick users into visiting a malicious site, likely to deliver a payload or conduct further social engineering. 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 high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/haktuts-coin-master-spins-game-hack PDF link annotation
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/best-free-roblox-exploit-auto-update_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/roblox-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/free-robux-glitch-march-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/hack-an-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/roblox-cheat-engine-speed-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1padangpariaman.sch.id/__statics/gudangsoal/files/free-coin-master-game_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_off000034f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34F1 22988 bytes
SHA-256: babb695e41bf10ca14ae106aa8d69bfc54bc52c396976f186b7d9f6eb58abfd3
font_01_sfnt_off00006896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6896 18320 bytes
SHA-256: 4d6b5a7e8d71a8cfca2907d7514c709552786c5f23281e6f9e82b92694f55921

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