Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d999bb8ff852815…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 23:18:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6c62c90d293930d62e9845832f67a66d SHA-1: 001f1438a50ab65af23d51fd89e25448d44ade55 SHA-256: 5d999bb8ff852815e73fb15dcf0832866ffd2c710d3bbcd5ad2a3d8e83444d8d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks, specifically for 'Coin Master', directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the PDF_GAME_HACK_REDIRECT_LURE heuristic confirms the deceptive nature of the embedded link. No scripts were extracted, but the primary attack vector appears to be a phishing lure leading to a potentially malicious download or exploit site.

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.tw/app/406889139/how-to-get-free-shields-on-coin-master-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/ww-roblox-come_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/restaurant-tycoon-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/do-you-want-free-robux-get-unlimited-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/nike-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-roblox-no-download-no-survey_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-muscle-shirt-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/cheat-engine-noclip-roblox-download_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hacking-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-do-you-get-1m-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-pf-hacks_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/show-me-how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-robux-on-pc-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
stream_002_off00002fc5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FC5 22776 bytes
SHA-256: b784f46f5a36d8db4455784c6781a24bad4a5ca4c3479e102fd3ee007fd0a1a6
font_01_sfnt_off00006293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6293 18576 bytes
SHA-256: bafb54b008408335a6cbf31f947a9ae1c512e34b5a36ee22a21ea4e663dc1f71

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