Malicious PDF — malware analysis report

Static analysis result for SHA-256 758fa1a16ea3a4d2…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 07:01:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a5e5cded0cfe2ffdcff499c41e2ad12d SHA-1: 397b85dd26eb0198b18d0ef1720742347fc1740c SHA-256: 758fa1a16ea3a4d2321d743b46067a704613515cc0ff22e95aa3f1cb26a596b6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, which is designed to lure users into clicking on deceptive content related to game hacks and generators. The presence of a visual download button further supports the lure tactic. The document's content and embedded links strongly suggest a phishing or scam attempt aimed at redirecting users to 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/479516143/do-you-get-minecraft-windows-10-for-free-game-hack In PDF document text
    • http://library.thamrin.ac.id/repository/free-robux-trapball_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/25-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/how-often-pubg-uc-appointments_GM1330123889.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/roblox-elemental-battlegrounds-speed-hack_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/more-robux_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/roblox-servers-free_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_off00003154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3154 22452 bytes
SHA-256: 750e7b94f1085eaf4b16f1757c16762049cdd840e40b7c0ad2eeaddadb3c1ada
font_01_sfnt_off00006314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6314 19280 bytes
SHA-256: 82868eabda4cfb8b8a166ceadd1c13ff807df88b14785b0e9b7f75ebacc4b760

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