Malicious PDF — malware analysis report

Static analysis result for SHA-256 362bd0c0d96ffb97…

MALICIOUS

PDF

34.1 KB Created: 2021-07-19 06:59:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fe8357d6c5d7d2dded5ee47ec202fcfc SHA-1: ad391e86069ed461cb089a6ff6df63c19edbfbf7 SHA-256: 362bd0c0d96ffb977280f2e41adbe04596555fe4260bafce769e4873463c691a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for a 'free generator / game hack' lure, directing users to a suspicious URL. The document body, though heavily obfuscated, contains references to 'Roblox Com Free Robux' and the same suspicious URL, reinforcing the lure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to a potentially malicious site for credential harvesting or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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 http://netcdn.tw/app/431946152/roblox-com-free-robux-game-hack PDF link annotation
    • https://infoagronomia.com.ar/images/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://infoagronomia.com.ar/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://infoagronomia.com.ar/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://infoagronomia.com.ar/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://infoagronomia.com.ar/images/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://infoagronomia.com.ar/images/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • https://infoagronomia.com.ar/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://infoagronomia.com.ar/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://infoagronomia.com.ar/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://infoagronomia.com.ar/images/how-to-get-free-robux_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
font_00_sfnt_off00002ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBF 23096 bytes
SHA-256: 89ec559f42c0b8f1934e3a4c1a4a931f03f8cafd1cecc7f01273025bcdc53597
font_01_sfnt_off000062c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C7 18536 bytes
SHA-256: 8bd8f79a3d85335837704a41a1f8010889ce781331cd4cec55e8058680d5a9b8

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