Malicious PDF — malware analysis report

Static analysis result for SHA-256 10c0cf87c164e090…

MALICIOUS

PDF

35.3 KB Created: 2021-07-02 05:54:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3fef2f532d422c804a303d43e38e5db1 SHA-1: 0962c6ad90d79113280e27f3e696b0b82f508546 SHA-256: 10c0cf87c164e090ca40164deeec629ce6b06a181ebc890d312b6d0095e0aa1c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for free game currency (Robux) and embeds a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL is designed to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

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.co/app/431946152/how-to-get-free-robux-but-only-login-game-hack In PDF document text
    • https://digilib.stieama.ac.id/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-do-you-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-camp-2-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-mm2-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-spawn-hack-in-apocalypse-rising-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/good-watch-dogs-hacking-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-robux-new-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-cheat-source-code_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-star-wars_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-hack-no-verification-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-june-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_off00003310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3310 22120 bytes
SHA-256: 3a2b69ca39f7d4bb98fb1c1530952e26a2c275fe9fe5d9334bd33a89e8fc3397
font_01_sfnt_off00006429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6429 19356 bytes
SHA-256: 9c9235258f6272f7a0996f501659fa82eac2e544f40ee83ebbc08811f6d42378

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