Malicious PDF — malware analysis report

Static analysis result for SHA-256 1679b52395fb410a…

MALICIOUS

PDF

42.4 KB Created: 2021-05-23 21:42:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0067547a1769740ff42dcb899af421ad SHA-1: 50355478ea1b53f0d6b67c8b4e8318dfd79ec677 SHA-256: 1679b52395fb410afc48cbe499012b9255dcf36a63fb08621cd5b833c107d806
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure for "Robux Hack Tools" which redirects to a malicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to a potentially harmful site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7429

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/431946152/robux-hack-tools-game-hack PDF link annotation
    • http://arpinoturismo.it/images/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://arpinoturismo.it/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://arpinoturismo.it/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/coin-master-free-spins-link-haktuts_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033a7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33A7 28576 bytes
SHA-256: 2b61e6f95c00b2deebf5853fd868e7f27c5723a2d010d086f0173275ab0fb3d3
font_01_sfnt_off00007784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7784 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off0000842c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842C 18320 bytes
SHA-256: cf6d0fcc2a7c18e0ae1e84145e037068603b130caaef77e993c358e364abbe1e

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