Malicious PDF — malware analysis report

Static analysis result for SHA-256 9497148c00733ae5…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 20:08:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b1928d28bfa717857aed31ee576f7f61 SHA-1: 05b0c15aa60f0ecc24e14fbf54ea91c6601c04aa SHA-256: 9497148c00733ae5c774e1019a6d4969dba010dccfd2602efa6322fde3397370
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 0.9865

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.online/app/406889139/twitter-coin-master-free-spins-game-hack PDF link annotation
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/roblox-robux-codes-free-2021_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52A0 25212 bytes
SHA-256: 62c64ce30e55400bc75391d554179068d9df7a55690e5a84cbe10f5eed38a0ab
font_01_sfnt_off00008cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB4 18052 bytes
SHA-256: 06f68ec0900a8a665d0c319e95253c201ab611d648accf1df96cbabceb79519f

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