Malicious PDF — malware analysis report

Static analysis result for SHA-256 d795d54a99d00343…

MALICIOUS

PDF

33.3 KB Created: 2021-07-20 12:30:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 45c7c1567d191cb94fb8164f0f5225fc SHA-1: 6c076b0ab96ecea3fa936272b2bb303e1d399e7c SHA-256: d795d54a99d0034308ecc758402e022db68a5587e414096cef95606c5635a14c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a visible call-to-action button, all directing users to URLs associated with 'free generators' or 'game hacks' for popular games and platforms. The primary lure is for free TikTok followers, which is a common social engineering tactic to drive traffic to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URIs strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/835599320/free-tiktok-followers-without-verification-game-hack PDF link annotation
    • https://europe-upkl.eu/images/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://europe-upkl.eu/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://europe-upkl.eu/images/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • https://europe-upkl.eu/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://europe-upkl.eu/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://europe-upkl.eu/images/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://europe-upkl.eu/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://europe-upkl.eu/images/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • https://europe-upkl.eu/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://europe-upkl.eu/images/coin-master-free-spins-2021_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_off00002d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D95 22368 bytes
SHA-256: 727a576f5a070ce47665b20d4aca3ad5f42eb6e0df115a01854989882f1573b2
font_01_sfnt_off00005f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F42 18560 bytes
SHA-256: 4328f2d9021fda272d6942102c30ad90396447c40598e55ae21b07e1aa723a10

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