Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d5d43299f1c0ea…

MALICIOUS

PDF

33.3 KB Created: 2021-06-19 05:03:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 35b0f0d0edc5246d0abd4a47a52a441b SHA-1: 24e3c883f58bb23135e0348d72cfef92c51fbd4a SHA-256: 14d5d43299f1c0eae906b03ee07300e7202462abc43f7907daaab1c3200d2edb
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically designed to lure users with promises of game hacks and free currency. The primary redirector URL is http://netcdn.co/app/431946152/free-roblox-groups-reddit-game-hack, which then leads to further PDF files hosted on an IP address. This indicates a phishing or scam campaign aiming to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.co/app/431946152/free-roblox-groups-reddit-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-new-cards-hack_GM406889139.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/hack-para-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-roblox-with-lucky-patcher-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-2021-android_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/happy-birthday-isabella-roblox-speed-hacks_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/5-roblox-games-that-give-free-robux-working-youtubeyoutube_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-pin-numbers_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-duolingo-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/como-recuperar-cuenta-de-roblox-hackeada_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-roblox-without-a-app_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-free-install_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_off00002b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B75 22052 bytes
SHA-256: 6828481e250bbe4f9193f9b4e9829e9cbd9b27d8aa88f549ecc74c8217739635
font_01_sfnt_off00005c63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C63 19364 bytes
SHA-256: 099b27daa6adaf5d0543cd3de8686e127c302ad4841d15dbbbdea451d4b9a8dd

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