Malicious PDF — malware analysis report

Static analysis result for SHA-256 1766dc1e5f0f01cd…

MALICIOUS

PDF

33.3 KB Created: 2021-07-05 19:53:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: b7a4fb81595ce45c220d207a1c819f21 SHA-1: 7e373208864728c3d0804015dbcb6c0eb19dee28 SHA-256: 1766dc1e5f0f01cdf5f0b7bdcccf0a791dc2abd024a5481487e8692b96cdba99
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free game hacks and currency. The primary lure is related to Roblox, with a direct link to a known malicious redirector. The document body and embedded URLs reinforce this theme, aiming to trick users into visiting potentially harmful sites.

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/roblox-free-no-download-game-hack In PDF document text
    • http://digilib.stimlog.ac.id/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/sites-robux-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-promo-codes-june-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/prison-break-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/eas-robux-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-to-find-people-ingame-in-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-robux-hack-game_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-clear-pants_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-obc-on-roblox-ios_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/elemental-battle-grounds-hack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/ear-free-spins-for-coin-master_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_off00002ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA2 21884 bytes
SHA-256: 16ca7135462fbbe34fc65dba2b26f1a72cd2360b87186fdd4355cc6dd3316906
font_01_sfnt_off00005cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBA 19156 bytes
SHA-256: ba179ae70ead152b01ae8f27451fe6f8d609efa6e1c0129b35fe0e54807ded44

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