Malicious PDF — malware analysis report

Static analysis result for SHA-256 db400e7b127e28f3…

MALICIOUS

PDF

36.4 KB Created: 2021-05-24 22:05:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5991149007c80784d50b0c9f3b120f84 SHA-1: 1e3c926e0ed94d0e62d87de21f381cf646fc3a10 SHA-256: db400e7b127e28f3271d3532528c5ac753275995e0e3075810973c93f7573dba
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering 'free generators' or 'game hacks', a common lure for malicious downloads. The ML classifier also flagged this PDF as malicious. The document body explicitly contains the URL 'https://netcdn.xyz/app/835599320/free-tiktok-likes-without-verification-game-hack' and a call to action, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-likes-without-verification-game-hack PDF link annotation
    • http://www.maakherumusic.net/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-spins-from-coin-master_GM406889139.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_off00002f26.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F26 27592 bytes
SHA-256: 8f04f8bce388f1221f106fae627ce70e3156bef72ca466ef981fd2af6852d6cc
font_01_sfnt_off00006cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDC 18324 bytes
SHA-256: 2890867b549cf671f2c98eef92adc8de00a1acce0cbbf08ac1c0ae5a6c34295b

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