Malicious PDF — malware analysis report

Static analysis result for SHA-256 b19fe6580ade064b…

MALICIOUS

PDF

38.8 KB Created: 2021-05-20 17:39:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e242380c9b6a414a38291de8a2060049 SHA-1: 87fd29447eef7ab2ee213758101e59635e18184b SHA-256: b19fe6580ade064bf77face3bf11bb3ef79512807eaf051d62e3d9b72d6ba2ee
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/479516143/minecraft-hacked-apk-game-hack PDF link annotation
    • http://szekelymozes.ro/images/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/tiktok-free-videos_GM835599320.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_off0000348d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x348D 25092 bytes
SHA-256: 16aeb74fd6dc3c6643bf3f52b5afd9321d5fb12713795c9649500284a6795ab7
font_01_sfnt_off00006d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D09 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000076bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BB 18088 bytes
SHA-256: 9437dee2205271bfc3290dd22414fa0f0047947481f41fe3ac95feb69f08380c

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