Malicious PDF — malware analysis report

Static analysis result for SHA-256 83088cf22f4586f4…

MALICIOUS

PDF

31.6 KB Created: 2021-07-19 23:42:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: adf7a69844a38ddc83de7a34ac36d043 SHA-1: f4eb3eaeb7723eafda0a06d954e355a485679bc2 SHA-256: 83088cf22f4586f43ac158988941972ff5c6f0a39e243590a318908e7c9fc81d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, with a primary lure related to 'free Robux' and game hacks. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly suggests the intent is to redirect users to potentially malicious content or phishing pages. While no scripts were directly extracted, the embedded links are the primary vector for attack, likely leading to a second-stage download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/431946152/robux-free-com-game-hack PDF link annotation
    • http://olimpik.mk/imagescke/upload/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-minecraft-alt-accounts_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
font_00_sfnt_off00002995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2995 21568 bytes
SHA-256: a4429290695ebee1e13e5ac93210e3636f2d8bdfb6040684fbcde0e70f1a90f1
font_01_sfnt_off000058f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58F8 18460 bytes
SHA-256: af486b5e69f7ce055209fde0c3fc8412e83348f9e9adea78a60ef2feccaab9c1

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