Malicious PDF — malware analysis report

Static analysis result for SHA-256 c622643240fd2a1d…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 05:39:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0ffc1311ba197e41eeb48f78878cfd90 SHA-1: 869b14d964898ea6925a7316a5ed31cda6f6b293 SHA-256: c622643240fd2a1db945d6f42645908117947ce51dc54494329eb0ed639979e7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/free-robux-scam-game-hack PDF link annotation
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-cp_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-70-spin-link-today_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
stream_003_off00004c7f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C7F 25608 bytes
SHA-256: 65220e3d5824e5a38e09cbed6237780313f6e30fa7e1072aef5f518095b4f1d6
font_01_sfnt_off0000879f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x879F 18500 bytes
SHA-256: 24c52a02bd601b0a5cf869202747d5c16280e540771a7d3b3f68f33a5cbf68e3

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