Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0d0a775beb492c…

MALICIOUS

PDF

45.8 KB Created: 2021-06-01 08:32:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 06c660b3f3074977dca9d7e06e26af6d SHA-1: f5d7db83a274dbd66ca1cea5ed407abb90030d71 SHA-256: 4d0d0a775beb492ca7d215d80f7f0074769ec785c6d030590a82edcd9f8d0250
122 Risk Score

Malware Insights

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

The PDF contains a high-confidence heuristic indicating it's a game hack lure, specifically linking to a URL that impersonates brands like PayPal. The ML classifier also flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely leading to credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/bloxland-free-robux-promo-code-game-hack.
  • 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/bloxland-free-robux-promo-code-game-hack PDF link annotation
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/free-30000-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/roblox-piano-hack-download_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/hack-roblox-android-apk_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/how-to-hack-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/free-robux-pins-2021_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/free-tiktok-views_GM835599320.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/how-to-get-free-rocket-fuel-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/free-robux-real-without-email-needed_GM431946152.pdfIn PDF document text
    • https://www.beautybytamar.com/wp-content/uploads/fsqm-files/is-minecraft-dungeons-free_GM479516143.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
stream_004_off00005469.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5469 25448 bytes
SHA-256: 422cf723f1089a65477b3af11a56e0611380257fdf23a8eab80612c0cc60cbd9
font_01_sfnt_off00008eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEF 18904 bytes
SHA-256: 7005fb6a264fdb6e14bce4df569f2484c0534be506a4c5333ec57462a5459208

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