Malicious PDF — malware analysis report

Static analysis result for SHA-256 205dde33fb3075b6…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 05:02:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f56a7b07b772be684c90981aa380099f SHA-1: 0d4ccf881be8a255530bda5467a8ad26b688cc06 SHA-256: 205dde33fb3075b686f95189e5ef873c2fc785c5ecd714a26c71b44284bd26b7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious redirector link disguised as a game hack generator, designed to lure users into clicking. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded URL and the nature of the lure strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/free-role-in-coin-master-game-hack In PDF document text
    • http://lib.untad.ac.id//repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/pokemon-go-free-6th-gen_GM1094591345.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-gg-codes-php_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-logo-maker-free_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_off000052f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52F1 24700 bytes
SHA-256: 1945dd16e63fed716ddf0c2bb5e6ace69f7e8b4e0c425133cc67d3ec0abeab67
font_01_sfnt_off00008bdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDD 17784 bytes
SHA-256: 0d7a398330f0569861c9be6bc79ebc6a034914cc65f21f48a02d0c09e8a404e1

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