Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a4d695ad519c81e…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 08:39:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 25b81f00495d15e6880e43b45e1d4c4b SHA-1: a3a47cc9903774ea940332e037f284b0a260ad03 SHA-256: 9a4d695ad519c81e3c758421154a4c82cdd12be7a8a613db6b918177b6d0cad3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering free game items and hacks, such as 'how-to-get-roblox-skins-for-free-game-hack'. This lure is a common tactic to redirect users to malicious sites that may host further malware or phishing content. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs supports this assessment.

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-get-roblox-skins-for-free-game-hack PDF link annotation
    • http://perpustakaan-stikesmsb.com/repository/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/surprise-texting-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/are-free-robux-websites-real_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/get-a-free-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-hack-roblox-ninja-legends_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/nuevo-hack-atravesar-paredes-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/what-do-roblox-points-do_GM431946152.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_off00002f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F94 22532 bytes
SHA-256: 3cac040207ddb4726d889d088eb182c1912fdde4b0ddaab601bdbbd56254a0d0
font_01_sfnt_off00006233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6233 19208 bytes
SHA-256: 1c1afc2664493d2584b020190bddd851a01911cf6dbefb02f6b98fca5ebb4972

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