Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7200b53c11333f9…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 11:50:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 53d13052a8684323f89efc46354e4ae0 SHA-1: 2b72c2082a8523b2562d238a6cc2a3e1af029507 SHA-256: a7200b53c11333f9878234fefa99009aa5dbdcf699b3a80fc2bf432719ea6a21
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector. The primary lure appears to be related to game hacks and free in-game currency, aiming to trick users into navigating to potentially harmful websites. The document body and heuristics indicate a social engineering tactic to drive traffic to external, untrusted resources.

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/406889139/how-to-get-free-coins-in-coin-master-game-hack In PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-free-robux-no-human-verification-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/roblox-moderators_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/roblox-free-black-adidas-t-shirt_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/roblox-use-the-cheats_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/cheat-codes-dayz-roblox_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/free-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/free-minecraft-mods-for-pc_GM479516143.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_off00003177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3177 22656 bytes
SHA-256: edd4e6dea5cf434faac9f3a63a720faa59cb7695005f1fd121325f1ea6c27f72
font_01_sfnt_off000063c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C7 18164 bytes
SHA-256: 9fab875a536b983537b9433768b1ea3e5c55ad95c87001a66781b974c182b662