Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad3e9f34ecbb8b1d…

MALICIOUS

PDF

42.0 KB Created: 2021-05-14 17:43:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 335c2ac39058a4500eb55eeb7a9fb18e SHA-1: 0e464056c804f971aa9c664f664ee34386fd3d2f SHA-256: ad3e9f34ecbb8b1d6c7ecf54e038fca792f240fd7743746b990434c0f5e849d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators' for popular games. The heuristic firings confirm these links lead to known malicious redirectors and a lure for free items. The document body and embedded URLs reinforce this phishing and redirection attempt, aiming to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-gameplay-game-hack In PDF document text
    • http://selectionspdf.fr/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/get-robux-com_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • http://selectionspdf.fr/images/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-hack-2021-apk-download_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
stream_003_off00004890.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4890 25116 bytes
SHA-256: a12684fac9cf24d60f885910821981e68fb32f3a3b6e6e947ff2918f559a4771
font_01_sfnt_off00008210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8210 18236 bytes
SHA-256: ad3c54622fe5860f441fa157cfd09fdd7391131bf21229add7d3bdfc0c26f4fb

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