Malicious PDF — malware analysis report

Static analysis result for SHA-256 43e6a7248749b41f…

MALICIOUS

PDF

45.7 KB Created: 2021-06-11 06:26:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a5868d8030e9682a4509879789717674 SHA-1: fb23cf3f4ce6d7887696f33e3ad51053d39dd990 SHA-256: 43e6a7248749b41f0d3ef46a226b17e4f45c3566600179ed6bb4f9aabac6e01f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains multiple embedded links that redirect to websites offering 'free generators' or 'game hacks', a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious with high confidence. The primary IOC is the redirector URL which likely leads to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/games-like-roblox-but-better-and-free-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-do-i-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/a-real-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-on-united-kingdom_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-any-player-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/camisetas-de-hacker-para-crear-en-roblox_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
stream_004_off0000532e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x532E 25968 bytes
SHA-256: f5102a43319c84fd0375c85f30eb945467aad79e5014c7cf9b7094c1e87a1c69
font_01_sfnt_off00008db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB9 19144 bytes
SHA-256: a042e8994182fbccac07d09fc11e24f8d6eedaa234bcf833d0e8d36f1772be58

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