Malicious PDF — malware analysis report

Static analysis result for SHA-256 443a097e44df124b…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 15:16:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 422e186421de01ff3f03bb00d79218e4 SHA-1: 37b978c704ee6444df865a3d05fb5f7dde90b652 SHA-256: 443a097e44df124b1313bea46eb816b1977696f119f4504dad177370af59bb41
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and lures for game hacks and free currency, indicating a phishing or scam attempt. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of known malicious infrastructure. While no scripts were explicitly extracted, the document body and embedded URLs suggest a workflow designed to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

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/431946152/free-roblox-gift-card-game-hack In PDF document text
    • http://xenonsvjetla.com/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-limted-time-game_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-hack-peoples-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/pastebin-roblox-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://xenonsvjetla.com/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-in-an-lg-phone_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-rs-obc-tbc-bc-gain-95-2021-free-robuxs_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-black-hair-in-roblox_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_off00003290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3290 22828 bytes
SHA-256: f98bc640f9ce4b1d4c04bdbe693b4b7edce3119a80a582a545067a7127336e4b
font_01_sfnt_off00006557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6557 19048 bytes
SHA-256: 7751f256669591ba1b6163ee6eba71e2718081a78833b13667734d85569e04b5

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