Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2b2fcc38b2e2c06…

MALICIOUS

PDF

42.2 KB Created: 2021-05-13 02:03:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: fd647180b967cc24e26cee037ac7ed65 SHA-1: af631edd511f2d833178ffdcfb1b0e6caa5395de SHA-256: a2b2fcc38b2e2c0614e9513e337ba6c39591dedd08447833bd4b0f48fdd5c51f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that point to known malicious redirectors and lures for game hacks and free in-game currency. The document body and extracted URLs strongly suggest a phishing attempt to trick users into visiting potentially harmful websites. The ML classifier also flagged this PDF as malicious with high confidence.

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/479516143/minecraft-free-unblocked-game-hack In PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/robux-earning-websites_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-hack-no-verification_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_off00004bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBA 24468 bytes
SHA-256: 27282b33c2e6ad753805ed6774d84a929df95fcc1753199f41f3d99ef2ce9a59
font_01_sfnt_off0000822e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822E 18472 bytes
SHA-256: 4446ec9a14b3bfac30f066e0e962bc7f96b5cea98edad6ed93b9652aaf8297cb

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