Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e90f465b057c5b…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 13:40:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 72f286f053068d25d6cafd20f7b67abf SHA-1: 43b8ce968ff579fcfb78355a1ba980adba7b3b59 SHA-256: d1e90f465b057c5b7188073db13cd14c529417d2207da27fd914a4f2337126a4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings indicate that these links are associated with known malicious redirectors and lure users with promises of free in-game currency or cheats. The document body text and embedded URLs reinforce this lure, aiming to trick users into visiting 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/431946152/best-free-robux-sites-game-hack In PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/free-robux-admin-code-pastebin-no-inspect_GM431946152.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/robux-game_GM431946152.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/roblox-card-codes-hack_GM431946152.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/robux-com-free_GM431946152.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • http://raqam.net/uploaded_files/userfiles/files/how-to-hack-roblox-passwords_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_off00002f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3D 22020 bytes
SHA-256: d767f21f4ead29d6b966d0eaa0e7673249eea593e69156ce365ebedf633101d4
font_01_sfnt_off00005fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBA 18940 bytes
SHA-256: 0fcca8ab5ad8a611b3094f34fe9520b7837fa4f9a56d425283eb336eaeb68af3

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