Malicious PDF — malware analysis report

Static analysis result for SHA-256 78ff27ef372850e8…

MALICIOUS

PDF

42.1 KB Created: 2021-04-27 23:33:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d366f0b7cf1f94fdf8e2e4a9ee125ff3 SHA-1: f9146e23a932b5f960d04c6b4bb6caf9c2d5fbd5 SHA-256: 78ff27ef372850e89dd486c39981098bdedeaa7eca258235f51e1093258976c9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack redirector, specifically mentioning 'apocalypse-rising-hacks-roblox-crash-game-hack'. The document body, though heavily obfuscated, contains similar text and the primary malicious URL. This suggests a social engineering lure to trick users into visiting a potentially malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/apocalypse-rising-hacks-roblox-crash-game-hack PDF link annotation
    • http://www.saburai.ac.id/elibrary//repository/dragon-keeper-roblox-cheats.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/forum-comment-cheat-sur-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-free-modles.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-vips-server-roblox-jailbreak.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hiw-to-hack-miscreated-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-boy-shirts-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/fencing-roblox-hacks.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-cheat-engine-wall-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-hacks-xray-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-hack-in-to-builder-mans-acount-roblox.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_003_off000041af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41AF 27332 bytes
SHA-256: 435fe29bbf560ca3d021b9e4ef99e6964eda558b705e5cfc6b31505e5c2f4e6f
font_01_sfnt_off00008042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8042 19112 bytes
SHA-256: 30990087c92633c1c537133ba5d9461d99a1f502b6c381452390c18fd84a123f

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