Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6f7f4625772b639…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 09:35:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3b026e3761f538dcd2b39105cbacd33e SHA-1: b54b7ebfb603ca1fc421df52051c0c0a89dc29d1 SHA-256: e6f7f4625772b639b63fb377521f36616576b89fc5e238d4d6a1cba848ad0d80
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically targeting users interested in game hacks and free currency for games like Coin Master and Roblox. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the primary attack vector is the malicious redirection.

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/406889139/coin-master-free-coins-2021-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-no-verifying_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/krnl-download_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-face-codes_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-obby-link-in-august-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/video-de-roblox-hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/boku-no-roblox-quirk-hacks_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-robux-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/cheat-codes-for-skywars-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/unjailbreak-download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/jailbreak-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-lumber-tycoon-2-pc-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-super-power-training-simulator-hack-download_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
stream_002_off00002e2e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E2E 23024 bytes
SHA-256: 1a389d264fc0049f798e29a1db34447ff6f6b4d5831b4969c451c6bc126a77fd
font_01_sfnt_off0000620d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620D 18400 bytes
SHA-256: 0cc69a54ece3ed14f72d45612a229cad946be49a09675100e3633ee455bac280

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