Malicious PDF — malware analysis report

Static analysis result for SHA-256 44028b6383ce5fe7…

MALICIOUS

PDF

33.7 KB Created: 2021-06-28 20:02:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9f6a1b10253ca18a04d27f2b20ebaf00 SHA-1: 15103587abf35fc72f1f99cdec8824b3b61a2af5 SHA-256: 44028b6383ce5fe7e11ef943afe6909c58c97173fff09c6627a45f665da5e48d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a lure related to game hacks, specifically for Roblox and Coin Master, to entice users to click. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-explorer-hack-game-hack, which likely serves as a redirector to a malicious payload. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit user interest in game cheats to deliver malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/roblox-explorer-hack-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-free-robux-give-away-lve_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-hack-computer_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/lua-script-hack-dinosaur-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/redeem-code-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-free-item-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/cyberchase-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/deep-ocean-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-created-by-jess-the-gamer-girl_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-hack-meep-city_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/rob-hacker-online-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-huge-field-fre_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-free-com_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_off0000300e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300E 21456 bytes
SHA-256: c7b45688138198003509b8cd1985d9f6c6976f464e198635ec3250900480480f
font_01_sfnt_off00005efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFA 18832 bytes
SHA-256: 5829614ebd8b4f5265f78e5fc86960e7ea2af2d93ea949d68ada45df7534b00c

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