Malicious PDF — malware analysis report

Static analysis result for SHA-256 e767f068f8c9021b…

MALICIOUS

PDF

39.3 KB Created: 2021-05-22 08:09:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 47a2a4d77ebc72c720375a52a3ede317 SHA-1: e35cfa9a1eb9a7e21a40fabe3c2780eaa5083a8d SHA-256: e767f068f8c9021bfee4e6d3b3e0e8199690fe768f5bf4a9dfd613761c55c565
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a call-to-action phrase, heavily suggesting a social engineering lure. The primary link points to a 'free generator' or 'game hack' site, a common pretext for distributing malware. While no scripts were explicitly extracted, the PDF structure and embedded links indicate an attempt to redirect the user to a malicious download or exploit site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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 https://netcdn.xyz/app/835599320/free-tiktok-followers-without-verification-game-hack PDF link annotation
    • http://ines.co.rs/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-spins-app_GM406889139.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
stream_002_off000031df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31DF 25140 bytes
SHA-256: 7641503b88a5099636fdaa11053c32cf477e85f318f5015e96bd5f46bded3abf
font_01_sfnt_off00006c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C71 3124 bytes
SHA-256: d6dd29adb69da7f9a23a5e3791282a61e2f811794f560a0c409c8747766d9102
font_02_sfnt_off0000772b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772B 18560 bytes
SHA-256: 4328f2d9021fda272d6942102c30ad90396447c40598e55ae21b07e1aa723a10

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