Malicious PDF — malware analysis report

Static analysis result for SHA-256 e849fa44adff5593…

MALICIOUS

PDF

46.1 KB Created: 2021-06-10 19:52:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 2de2ab813dd2efbdc8be6c67ca1a46d5 SHA-1: cc04d55f66182d30ba3c6db880c0ba06a84ecddc SHA-256: e849fa44adff5593c2b233d12a502111af6fe352d5e8f4a67cc668c3f987a4d4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks or generators. The document body and heuristics indicate a lure to click these links, which likely leads to further malicious content or malware download. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/hackear-jailbreak-roblox-game-hack In PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.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_off00005478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5478 26480 bytes
SHA-256: 269a80c2eb2af2ae178c86ecbc81130aa6d26867954e8daacd08984782cbd2d9
font_01_sfnt_off00009125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9125 18468 bytes
SHA-256: 97c5bc91652c43af045b0a49695f5d691b339544f24d2a9e5b6924521ec68d46

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