Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f14279caa2976bc…

MALICIOUS

PDF

34.3 KB Created: 2021-06-18 04:09:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8391189658600bf477438e145a47a12f SHA-1: 8f380d572e47b9e23e296c49b076636d06efa844 SHA-256: 7f14279caa2976bc192b6494f49e083481a393706c64e544a247749356a90135
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains links that are flagged as malicious redirectors, specifically leading to a 'free generator / game hack' lure. The document body and extracted URLs reinforce this lure, aiming to trick users into visiting potentially harmful websites. No scripts were extracted, but the embedded links are the primary mechanism for the attack.

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.co/app/431946152/roblox-private-plane-free-game-hack In PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-tiktok-famous-for-free_GM835599320.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-cheat-indetectable_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-online-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-a-free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-apocalypse-rising-hack_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_off000030d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D1 21724 bytes
SHA-256: 4f9c80aed10c9317b15f0084c52d143e60cd2010e891dc999b6b227836e47055
font_01_sfnt_off000060d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D1 19144 bytes
SHA-256: 40e0e9768ffc346f3741a1ba1ce38296b7e87db0edb4dfae0adfd3386f2a6b62

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