Malicious PDF — malware analysis report

Static analysis result for SHA-256 f27814a0ff811ec6…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 09:13:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 221e7026226b4a81e49fa1a168da4055 SHA-1: 7b67fa38c32662df75e66b39c2d48630855b6e54 SHA-256: f27814a0ff811ec64f50dafe4ef60311fd5cc87afe85c5b456d06a507f521d56
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) 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 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/coin-master-free-spins-link-today-ios-game-hack PDF link annotation
    • http://pustaka.smpmuh2yk.sch.id//repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003074.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3074 22692 bytes
SHA-256: 062f5b3bc363a7372a98b5d2855239184724a24e9a8e6bfd9166ce3cca2b39b7
font_01_sfnt_off00006362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6362 18696 bytes
SHA-256: 7527cba58b63d14438adb6ea0e8db8bf2e3aaa5804fb6e6fc3d14b43130dbaab

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