Malicious PDF — malware analysis report

Static analysis result for SHA-256 adabd4f2a7079526…

MALICIOUS

PDF

46.2 KB Created: 2021-05-13 03:07:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3f8499a216725992b8cca673c515839e SHA-1: f0760c40d04a61c0565c91ca3f0c5a3a7e519e72 SHA-256: adabd4f2a707952670b16186dbd25075673e9b20c55f4fb2e8a0af073bc56931
142 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a seed-phrase/secret-recovery lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 5

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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 https://netcdn.xyz/app/431946152/how-to-hack-roblox-passwords-game-hack PDF link annotation
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://pkk.kom.smkn1losarang.sch.id/riped/perpustakaan/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A5A 25048 bytes
SHA-256: 8e617ab599ae5605f3910644c9a04c09774865bb8b0d754aff4fabf84d096c18
font_01_sfnt_off000083ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83EF 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9097 18672 bytes
SHA-256: bdba0893d178c93f7db8dfb8e75fc125deebdc91658f3b2576607bd83519404f

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