Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5b06d8214c2329…

MALICIOUS

PDF

33.0 KB Created: 2021-07-04 01:49:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: de91fe45dfeb2097fbb0d4e348cb5919 SHA-1: 6a544d3c7de6ae1671a1f89f83f3a59fa9daabd5 SHA-256: 7d5b06d8214c2329dd27a344b1ceb759f79a75179177480a45ffed68ae5bf9aa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and items to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. The document's content and embedded URLs strongly suggest a phishing or scamming attempt.

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/479516143/free-modded-minecraft-server-hosting-game-hack In PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-be-a-hacker-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-items-on-roblox-in-a-game_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-avatar-editor_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-lumber-tycoon-2-hacked-version_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-builders-club-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/cheated-roblox-gun_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-cheat-engine-noclip-2021-august_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-no-inspect-element-the-monoley_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-with-tampermonkey_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-free-skin-robuxed-no-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-stuff-on-roblox-mobile-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/piano-hack-roblox-got-talent_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-gui-place_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-scarf-roblox_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_off00002fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBD 21272 bytes
SHA-256: b9c67c65074aa46d9f7e7e597f34a2a4883f88f37a1097d3e74804880c41a6a4
font_01_sfnt_off00005e03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E03 18284 bytes
SHA-256: 4ae19380f71872a59bca81a6826a2f1ac99dae3e110f9987d961b4518a9677d8