Malicious PDF — malware analysis report

Static analysis result for SHA-256 931804010ef8602f…

MALICIOUS

PDF

33.4 KB Created: 2021-07-04 06:59:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: bf4a875757637832def038f901156337 SHA-1: e9b169746ac0a2a6942583de3e835a9eddb11398 SHA-256: 931804010ef8602f4baef48171fb5c48fb6f8a593a928e6deac58767385df032
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The document body and heuristics indicate it directs users to a known malicious redirector, likely to download further malware or lead them to a phishing site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/406889139/como-generar-coin-master-free-spins-game-hack In PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/roblox-how-to-hack-games-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/is-the-roblox-cheat-detection-good_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/how-to-hack-in-roblox-fly-threw-walls_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/how-to-hack-knife-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-obc-roblox-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/robux-free-win_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/hacking-roblox-reddit_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/roblox-flying-hack-free_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/what-is-robux_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-roblox-accounts-with-lifetime-obc-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/hack-para-canbiare-el-nombre-en-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/gainbux-gain-free-robux_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_off00002e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E75 22268 bytes
SHA-256: ebab5d426dfab6649afb458954bebb791047d94e80a25fdc4a028590520533da
font_01_sfnt_off00005f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4B 18432 bytes
SHA-256: 74c7be9cac45eb0624d02f0bcdb00c8d8e7b4dc028bb1348c6e4e3a908da1083

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