Malicious PDF — malware analysis report

Static analysis result for SHA-256 9711fff2c7465725…

MALICIOUS

PDF

48.2 KB Created: 2021-05-15 13:30:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 081072a95e16c112f7bbba3f1cc5e313 SHA-1: 4c8e31055c429602ad16085d5a68f974bc90808f SHA-256: 9711fff2c7465725f1fcf94bc7279dc72ce76fba7f799c88752183b0e50900e9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free in-game currency. The primary lure is a 'free generator / game hack' promising Robux, which leads to a known malicious redirector. The document body and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/websites-that-give-free-robux-game-hack In PDF document text
    • https://ceiprevellodetoro.org/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000489b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x489B 27692 bytes
SHA-256: 6c2103aa7da9b17166f58a853998aad8fe249990908fb8b09f7dd69de7271562
font_01_sfnt_off000087b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B3 6700 bytes
SHA-256: ae114634718854704d615808d33fb1b747d90eb28e420080bd5adbdfe7fb6a27
font_02_sfnt_off000097f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97F0 18944 bytes
SHA-256: 78a0fcf68a5d31112d03f33f6a87e59a8dd4ec5e5d54fb5213929ff381de215f

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