Malicious PDF — malware analysis report

Static analysis result for SHA-256 3636e788b57fef29…

MALICIOUS

PDF

42.4 KB Created: 2021-05-12 05:32:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0676c4a23e49fdf9fc3de8936748b5e9 SHA-1: 6da79a7f4fd321d3c6b42bd4e39109706e536014 SHA-256: 3636e788b57fef297782b6621ec5a1e44213f02614d9f4c17c88b56cfb6b6d30
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/431946152/no-scam-free-robux-game-hack PDF link annotation
    • http://jbm-constructions.com/images/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://jbm-constructions.com/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://jbm-constructions.com/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://jbm-constructions.com/images/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://jbm-constructions.com/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://jbm-constructions.com/images/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://jbm-constructions.com/images/coins-master_GM406889139.pdfIn PDF document text
    • http://jbm-constructions.com/images/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://jbm-constructions.com/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://jbm-constructions.com/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://jbm-constructions.com/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://jbm-constructions.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://jbm-constructions.com/images/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://jbm-constructions.com/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://jbm-constructions.com/images/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://jbm-constructions.com/images/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://jbm-constructions.com/images/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://jbm-constructions.com/images/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://jbm-constructions.com/images/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://jbm-constructions.com/images/500-free-coin-master-spins_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_off00004a27.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A27 25260 bytes
SHA-256: 930a88dc9a750849ac077e4b436983c6e00d2b139baacf23400c75dc0164b7a8
font_01_sfnt_off000082ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82AE 18500 bytes
SHA-256: 028f53d29b1a624cb68bae5e747b7c177b5cbf8f783d4c53e2642c12f49f399d

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