Malicious PDF — malware analysis report

Static analysis result for SHA-256 9366f4c25bc04edb…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 02:49:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0ccfadc0b5ad6be92b9a28e3ec267f3d SHA-1: e248a0aa2d4cfa9382bdf3f684c054d06a83c30b SHA-256: 9366f4c25bc04edbf28198f95ce224d73ee465b2fd1f3fceb81e8d8bdea9984e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body and extracted URLs reinforce this, with the primary URL being http://netcdn.co/app/431946152/asshurt-roblox-free-game-hack. While no scripts were explicitly extracted, the nature of the lure suggests it's designed to trick users into downloading or visiting a malicious site, aligning with spearphishing tactics.

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/asshurt-roblox-free-game-hack PDF link annotation
    • http://www.peterbarsony.com/userfiles/files/pokemon-go-free-walk-ios_GM1094591345.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/guy-goes-to-jail-for-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/rcm-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-fe-roblox-script_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-roblox-card-generator-need-to-do-nothing_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/hack-roblox-robux-2021_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_off00003165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3165 22084 bytes
SHA-256: 3df1f64e16f871f948bd3771922823ee4b6170bbb5ae6ace658ee69c2cb49e9f
font_01_sfnt_off00006259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6259 19060 bytes
SHA-256: d90fc789aa53d3e35b9f7c642ee7ba5c0ce8d563cf06edf3788a92ec94c45826

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