Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85a5617bb7824b8…

MALICIOUS

PDF

47.9 KB Created: 2021-06-11 02:40:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ca447a5e3e5ae39cbd1268b5dd938f71 SHA-1: 432a037aa26c176a48580f481892b04d97018b25 SHA-256: e85a5617bb7824b8208b608dfcfaa1ae84031347afd65ffbbc84a090d69615c0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a high-confidence heuristic identifying a lure for game hacks and generators. The document body, though partially corrupted, contains text related to 'Roblox' and 'game hack', reinforcing the lure. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/how-to-get-the-fly-hack-roblox-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-free-builders-club-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/descargar-hacks-de-roblox-nuevos_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-brocken-bones-4-cheats_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51F3 24884 bytes
SHA-256: c002fceb62a72865d856efecbba16e8370c68b1950acf46049dd9e51609c93c5
font_01_sfnt_off000089ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AB 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9653 18960 bytes
SHA-256: 3ba7aa0cb853dd7aeb97ea4f8e1dcd96b4744b6a3501f2c4ac978e6536ea6319

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