Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f99d48454b3a617…

MALICIOUS

PDF

42.5 KB Created: 2021-05-19 23:02:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: eaff8679537852b99f6a1295ed570faa SHA-1: 437dd6d188e0cd17c6977243a40cc6dd9576710a SHA-256: 7f99d48454b3a6170f859b57d63db673600887838e93da5540aa675de5fd1dbe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and free in-game currency, a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the heuristic firings 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 0.9971

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.xyz/app/406889139/moonactive-free-spins-2021-game-hack PDF link annotation
    • http://lib.akper17.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/minecraft-redeem-code-free_GM479516143.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_003_off00004b15.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B15 24572 bytes
SHA-256: 85064a7e1163c4bc4229e31e3a871f10a30d9717873e00f3bb6dddb661a7b9ea
font_01_sfnt_off00008337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8337 18400 bytes
SHA-256: 92ca299d7509cbf0a27ca4bb2455c3f9e24f9e6a05476c47560d59a1eb9d663e

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