Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f5892d71eaaa5f0…

MALICIOUS

PDF

36.0 KB Created: 2021-05-24 00:42:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8510d55fbd65032eec01c9dd8ff34dc2 SHA-1: 6bde093dbbeacd0346267b3ffd725408ee7b86ca SHA-256: 7f5892d71eaaa5f07b0e6019a328d02068ca843cafb5980dcf4ef2b2133503e1
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 0.9492

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/406889139/free-spin-link-for-coin-master-game-hack PDF link annotation
    • http://tehergumi.hu/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://tehergumi.hu/images/robux-earner_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/how-to-get-free-robux-on-computer_GM431946152.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
stream_002_off0000321c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x321C 25100 bytes
SHA-256: adbac37127e53e4cb8f863f42904c5b796d26503d4805cf4a7e302a9639855ee
font_01_sfnt_off00006c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C27 18056 bytes
SHA-256: b406b504177f6b640bc1dbcd325e02770f8a0621b64b682f119f0b5c1d0e735d

Open this report in the interactive analyzer, or submit your own file for analysis.