Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5b8c3c169616108…

MALICIOUS

PDF

34.4 KB Created: 2021-06-28 06:29:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5e375980652e4e39d8743f58d58d1e2f SHA-1: 18574eabe06f674dafe2aaec3f3d0d8d7bd9e8fc SHA-256: a5b8c3c16961610803359a6378591f6f253a18b4dd0ea302212f3b43a33cdb36
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and accounts to entice users. It contains multiple links, including a primary malicious redirector at http://netcdn.co/app/431946152/free-to-use-roblox-accounts-game-hack, which is designed to lead users to potentially harmful content. The ML classifier strongly indicated maliciousness, supporting the observed redirection behavior.

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-to-use-roblox-accounts-game-hack In PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/infinte-moneuz-roblox-injector-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/cheat-codes-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-cheat-engine-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-easy-way_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-clothes-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-rubux-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/hack-para-roman-aegyptus-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-116-free_GM479516143.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_off00003058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3058 22232 bytes
SHA-256: ed1711fd67674b04c453648a7a1fdad64fad7b7aec575c678caf62c6e7535a17
font_01_sfnt_off000061bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BD 18896 bytes
SHA-256: e0ef047fa5be16b7c39dce9fb536a88e4f6e88140105df7af3477347e35dbc56

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