Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c9d61e6751fcaed…

MALICIOUS

PDF

34.4 KB Created: 2021-07-01 06:53:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 288ea1058d83bec99ef52e69bf69ba42 SHA-1: 8d370d80bb3a95d773c741417c69daa6355e88c2 SHA-256: 4c9d61e6751fcaed30ddd2e7c608fe173499d4bc12aabd5413432d9dbb48f4cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically advertising 'free generators' and 'game hacks'. The ML classifier also strongly indicated maliciousness. The document body and heuristics suggest a lure to entice users to click on the malicious URL, likely leading to further malware download or phishing.

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/free-admin-roblox-codes-game-hack In PDF document text
    • https://digilib.stieama.ac.id/repository/denis-free-robux-website_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-use-cheat-engine-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/eran-robux-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-roghoul-legendary-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/make-your-own-character-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-vip-super-power-training-sim-servers_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-boombox-backpack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-into-someone-accont-in-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/high-school-life-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-accounts-roblox_GM431946152.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_off00002ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBB 22564 bytes
SHA-256: c5df8e011f9ba3a515384e1c30dc7809c3b61f065be229430bf9eece563bcdaf
font_01_sfnt_off0000611f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611F 19204 bytes
SHA-256: 81cc88021799a0b8c272c5d9e7cc2f390f8e0e5dd2bcf6c792bd96d39e999234

Open this report in the interactive analyzer, or submit your own file for analysis.