Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf6250e22f11aeb7…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 09:33:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a9ec55b2d57c0cf831f62a108ae7991a SHA-1: 6dab834f02c48a277aeb16f3979b4187377cf08e SHA-256: cf6250e22f11aeb78c296f7aeab58ab1e76d31e3b1a5adfe21709f536de83079
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and generators, specifically mentioning 'Free Hair Roblox'. It embeds multiple URLs that likely lead to malicious content or phishing sites. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted, but the embedded URLs and the lure suggest a phishing or malware distribution attempt.

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/431946152/free-hair-roblox-game-hack PDF link annotation
    • http://whiteyaknepal.com/userfiles/files/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/robux-get-com_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/tiktok-i-feel-kinda-free-song_GM835599320.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-get-free-cards_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
font_00_sfnt_off00005034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5034 24476 bytes
SHA-256: 38c201dbf0a3f39fa8219d8ab72e224aa5441213ba0ab5b9e870c27087931d0d
font_01_sfnt_off0000885c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885C 18296 bytes
SHA-256: a0599e440df83d1220524ed19e510b9c2f6a3db0fbd0aff9e889db947f6eea7b

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