Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1032d7cbe4163fe…

MALICIOUS

PDF

41.7 KB Created: 2021-05-16 01:03:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ffbe7c3b8c83af5ad90176f22017ebd0 SHA-1: 49b0bf69bf6ab105040984d091bcc40f7d1a2ca2 SHA-256: f1032d7cbe4163fe551d45ec9865737f70f7cc0f55a8867a34ba19772e482b89
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. The embedded URLs are designed to lead users to potentially harmful sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/gamehunters-coin-master-game-hack In PDF document text
    • http://librarystkippgribl.com//repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-attack-hack_GM406889139.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_003_off0000492a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492A 24628 bytes
SHA-256: 2e258aed4620249caffd7ece5ba7779863351c6d416fd79b180fa6dcb9beb40b
font_01_sfnt_off0000815b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815B 18112 bytes
SHA-256: c2ae28342630407017e32402e5197f88f475abc7b1f150f2e7ca71ade1f6ce7c

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