Malicious PDF — malware analysis report

Static analysis result for SHA-256 0270417c47282e12…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 06:07:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: edb41e93060a2cc960ba4487199283cf SHA-1: 9c1d6166585fb5c6ea4575b938c7ade79807bba5 SHA-256: 0270417c47282e120ddb729a8f71b4ef1fdbf919bd813e8666f20a89d30a70da
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to trick users into clicking malicious links. The document contains multiple embedded URLs, including a primary redirector at http://netcdn.tw/app/431946152/rbl-gg-free-robux-game-hack, which is associated with known malicious infrastructure. The presence of these links and the lure content strongly suggest a phishing or scamming attempt, likely leading to further malware downloads or credential harvesting.

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/rbl-gg-free-robux-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-the-guest-boby-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-reaper-simulator-hack_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/hack-cuentas-y-nombres-gratis-en-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/raindrop-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/cm-free-spins_GM406889139.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_off00002f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F62 22592 bytes
SHA-256: fff0ca8200a62d01e05b946c09d59636ab68438af80f6ea1a862d460066935a3
font_01_sfnt_off000061b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B7 18788 bytes
SHA-256: 59f9ca33a2a7e44c47b5adabbc3ceacc3a6bbd6ffe2d0380a638199fee6fbfd8

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