Malicious PDF — malware analysis report

Static analysis result for SHA-256 251506bfe2f6a242…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 14:50:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: ff09df6a1cec72cccb6a37363194e2c8 SHA-1: 5564c58217d42a066a91906909e65b10b4ce7ea2 SHA-256: 251506bfe2f6a24293e0638d0bffc4a71801e1164801bd5a0a5998575c6461e3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and cheats. The primary lure appears to be related to 'Coin Master' and 'Roblox' game exploits. The document's structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-haktuts-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/hacks-injector-roblox-laxify_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-infinitos-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-hack-2021-aout_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/one-piece-open-seas-hack-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/como-hackear-la-cuenta-de-tus-amigos-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-2021-mobile_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-hack-robux-hack-fr_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-login_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coins-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-robux-cheats-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-gen-website_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/noob-vs-pro-vs-hacker-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-hack-on-ipad_GM431946152.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_off0000300a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300A 22908 bytes
SHA-256: e9b6a08b88a66665a906f908007795026b02cf7a62b0ef6e72be401dff3b11b0
font_01_sfnt_off0000636e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636E 18144 bytes
SHA-256: 8daa1128151207aa24d82529a6eedb767dde599c849e3c144e38d1777f737c1a

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