Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d1750ea98d794a5…

MALICIOUS

PDF

46.2 KB Created: 2021-06-10 21:11:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: b8fdb02a8bb07bbf71bc69c405ff3d5a SHA-1: 1cf4cfe5277b85458d682d1071cc2773ac538f41 SHA-256: 3d1750ea98d794a5c894d669d5d893b95ee3d1555cb2a103f2bed3b2ea20fe12
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, identified as malicious redirectors. The document body and heuristics indicate a lure for users interested in such topics, likely leading to phishing or malware download sites. No scripts were extracted, but the embedded URLs and redirector findings strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/how-to-run-lua-script-roblox-hacks-game-hack In PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/roblox-g_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/free-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/robux-money_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://www.waelhamadehgallery.com/uploaded_files/userfiles/files/www-coin-master-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
font_00_sfnt_off00005377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5377 27252 bytes
SHA-256: d009d447ec457ab43ef2bbd9b38bfe8c1ef5346f8cc189def4a8b74e24959329
font_01_sfnt_off00009047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9047 18884 bytes
SHA-256: 45406bc8b733fa12f4fef24ec4937591587745f4b080cdf8886be36ad4c081c0

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