Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ba1dceeaae9a39d…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 22:35:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 13072880e5cdfeb4bfcc392cc62afc21 SHA-1: 34f0d40e23f0401622fe666eb8d8fed59f1da2f9 SHA-256: 4ba1dceeaae9a39d0c7fd0ca34780e47513892f2aad60ff4fe2edb6e5145a449
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body also contains numerous URLs related to game hacks and free in-game currency, reinforcing the lure. While no scripts were extracted, the embedded URLs suggest the document is designed to redirect users to potentially malicious sites for illicit gains.

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/coinmaster-spin-ml-link-game-hack PDF link annotation
    • http://rollipolli.hu/userfiles/files/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/wie-kann-man-ein-hacker-sein-bei-roblox_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/hack-gratui-pour-avoir-toute-les-gamepass-de-roblox-gratuite_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/hack-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-email-rewards-link_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_off000031a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A8 22896 bytes
SHA-256: 01c06e494cc77630fe572da5a1ef77b5478a7d44ce757a429e1a02327b424ad0
font_01_sfnt_off00006512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6512 18516 bytes
SHA-256: b0e668e274ded437ed00a1d6794e4abb06f5793e6d3053ab6dfe258afb448a5e

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