Malicious PDF — malware analysis report

Static analysis result for SHA-256 a18711e75a7a839d…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 14:10:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 16affcb5a7e37f9fdcb6b233373f49a3 SHA-1: 0a86c76b53666d0d5bc1ac66c756ae2c2ad69cb7 SHA-256: a18711e75a7a839d8d39b164916a1dd899c4a276c3267a849a7650f779cfd144
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs disguised as links to game-related content such as cheats and hacks, aiming to trick users into downloading malicious files. The ML classifier strongly indicated maliciousness, and the presence of a large number of external links suggests a link farm designed for SEO manipulation to distribute malware. No scripts were extracted, but the document's structure and content point towards a downloader or exploit delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-cheat-engine-commands-game-hack PDF link annotation
    • http://perpustakaan.iaiqi.ac.id/repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-hack-on-roblox-jailbreak-into-police_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/hacks-for-roblox-ro-boxing_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/good-hacks-to-do-with-a-hang-glider-roblox-treelands_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-a-star-code-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-lua-hacking_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/pokemon-go-free-incense_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/aimbot-hacks-for-roblox-code_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-christmas-clothes-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/custom-script-executor-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-and-free-coins_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_off00002fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDA 22024 bytes
SHA-256: cdbb8ebe0de7e5da53047f9ead73715111eda57c3aedb1f4b2177b63303f1c24
font_01_sfnt_off0000607d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607D 19312 bytes
SHA-256: 8713256e6531e12382ed8072ab83bbc081be327514dad608e224f5c0c1e4f4f2

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