Malicious PDF — malware analysis report

Static analysis result for SHA-256 9115e5f55f114dda…

MALICIOUS

PDF

34.9 KB Created: 2021-06-26 02:58:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 15edf15f38c973f422d05459790999a4 SHA-1: f2763b5278f27f9a040c1978ca8913f55a8a8c26 SHA-256: 9115e5f55f114dda00274fc92fe2383d39e9cc44acd35756956996f43c314bad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.co/app/431946152/free-robux-eith-no-verifications-game-hack. The document body and heuristics indicate a lure for game-related cheats or generators, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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-robux-eith-no-verifications-game-hack In PDF document text
    • https://razredna-nastava.net/files/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/www-mistplay-com-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/redeem-roblox-cards-free-codes-2021_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_off00003118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3118 22340 bytes
SHA-256: 13d394485e4ee8d4e8c80763c1d69ab92c81c0c8237a4701489279040027aa0f
font_01_sfnt_off000062df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DF 19240 bytes
SHA-256: 8da88a271141039078629e85cb9174c4602c1459f8ee9034634298c6d83e5308

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