Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1eff7371ceed3ea…

MALICIOUS

PDF

34.1 KB Created: 2021-06-23 16:36:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 97592a40afc1cd71a6eaa72ce32d170a SHA-1: ef06d5a73fceb94d1ac0c8769f35871a2f26f873 SHA-256: a1eff7371ceed3ea20e655074d713551daaac9f70b9dc503d29f9010241e3b76
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to hacking game accounts, specifically Roblox. It includes multiple embedded URLs pointing to sites offering 'hacks' or 'generators', which are commonly used for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the heuristic findings confirm the presence of external URIs and a game hack redirect lure. No scripts were extracted from this sample.

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/how-to-hack-a-roblox-account-easy-game-hack PDF link annotation
    • http://perpustakaan-stikesmsb.com/repository/hexus-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/mcpe-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/admin-free-robux-script_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-lots-of-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-hack-gamepasses-on-roblox-ccv3_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/create-own-free-skin-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-hack-lost-world-2021-com_GM406889139.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
font_00_sfnt_off00002eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB4 21980 bytes
SHA-256: af82a73f1b06671663d874d780a62b799df8fbb7b7c6719a4f81e2867aa5e490
font_01_sfnt_off00005f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5A 19244 bytes
SHA-256: 4dcbe17bebf2382ad99832b5327dd7065748ff6dacf6eb853322815bf961736f

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