Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d95f2803d65b02…

MALICIOUS

PDF

42.3 KB Created: 2021-05-11 16:24:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8fe41b306fb747e95e018bb6e27e8663 SHA-1: cdcc8fbb1bd547d528096d7b06d80992a1c6314f SHA-256: 40d95f2803d65b02560c2a901720bc469fb3674c72e023e593df95ca5addc1be
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to websites offering 'free generators' or 'game hacks', a common lure for malicious content. The heuristic firings confirm these links point to known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into downloading further malicious payloads or visiting phishing 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/431946152/how-do-you-get-roblox-for-free-game-hack In PDF document text
    • http://petrorang.com/admin-panel/products/images/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-change-your-name-on-roblox-for-free_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_003_off000049cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CF 24528 bytes
SHA-256: 6373c9b4fb804ac0dec48f15d82d429236567326d0dbad67a0e698be2207c956
font_01_sfnt_off000081d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D7 18688 bytes
SHA-256: c319980467b8bcea808cf7446b1cb0422dd1c28f9b99e7a79dce679e259df094

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