Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0a6a55fe09c971…

MALICIOUS

PDF

32.4 KB Created: 2021-07-06 01:52:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c9407f1a1f6a14e9da4b3ccdba0fc491 SHA-1: ebea7dddc8c2145c4f1c39c28b8317c6ed225b47 SHA-256: 1c0a6a55fe09c971b97b64a54a7935b0d397df0b63eaf52c75b2da2eb19e46dc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' and game hacks. The document body and heuristics indicate a lure designed to trick users into visiting these sites, likely to download further malware or engage in phishing. No scripts were extracted, but the presence of malicious redirector links and the lure content strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/how-to-get-free-robux-gift-cards-game-hack In PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/admin-commands-hack-roblox-script-pastebin_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-2m_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/real-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-get-a-free-roblox-gift-car_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-play-for-free-no-sign-up_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-cash-hack-script-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/hacker-music-roblox-id_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-hack-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/money-hacks-for-rocitizens-roblox_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/horse-valley-beta-roblox-maze-cheat_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/hacked-roblox-servers_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-roblox-jailbreak-vip-server-link_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-can-you-get-free-robuxs_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/dbfa-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/gilded-triad-crown-roblox-free_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAD 21308 bytes
SHA-256: 279231bebdf1e2ee7267b43f03b8b05aa41fac4138d86e1988d9ca26744ca030
font_01_sfnt_off00005921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5921 19280 bytes
SHA-256: fafb4ed9e61e21bf70d6f5220cfbe000d8fd05b6b22885af89428efc19440718

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