Malicious PDF — malware analysis report

Static analysis result for SHA-256 48910f1c6f6c506a…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 19:26:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 677bbe6d10c6f3ea6372279cc5d80d79 SHA-1: ba5be6a87b18264edf71553a7992a8ffd5e1ba48 SHA-256: 48910f1c6f6c506a48ba17bf6618507af4d6fe1e70fcd0a1ca6a6ca1bf794544
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a URL that promises free spins and coins. The document body also contains this URL, reinforcing the lure. While no scripts were extracted, the presence of the malicious URL and the nature of the lure suggest an attempt to redirect the user to a site that may host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-and-coins-without-human-verification-game-hack PDF link annotation
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-cheat-engine-forcefield_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/robux-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/hack-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-ways-to-cheat-money-on-vehicle-simulater_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-jailbreak-hack-keycard_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/theme-park-tycoon-2-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/tiktok-followers-free-2021_GM835599320.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-trolling-tips-for-frappe_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-cool-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-names_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/tiktok-free-food-vending-machine_GM835599320.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-online-hack-generator_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_off000031c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C1 22576 bytes
SHA-256: 17d27e3f5ed275209360209db0662720f1f52c2eec0b75d096e151569afb11a8
font_01_sfnt_off0000640e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640E 19248 bytes
SHA-256: d09787106218742ca695bada48859e01aee6b927acc2a42c1706bc817617cd1f

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