Malicious PDF — malware analysis report

Static analysis result for SHA-256 17d24c61b1033e36…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 13:23:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9c29d49b60767ebb92eb0a470159f047 SHA-1: 73e9ebb08a65c35dbfa1acadc18f3c9b551207d1 SHA-256: 17d24c61b1033e3633219789e3b245767f17bd612b00b4493a3a1130ea13d33b
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, including one to 'netcdn.tw/app/431946152/roblox-builders-club-free-game-hack', which strongly suggests a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious with high confidence. The document body and heuristics indicate a lure for game-related cheats and currency, likely directing users to malicious sites.

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.tw/app/431946152/roblox-builders-club-free-game-hack PDF link annotation
    • https://perpus.upp.ac.id/digilib/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-cheat-engine-walk-speed_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-robux-legit-no-groups_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-free-catalog-items-blogspot-com_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-hack-roblox-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-hack-2021-app-download_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_off00002e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E17 21884 bytes
SHA-256: b14672c189206a6e0a034e7500120a6396fce09b469c737efe71886cbf8cb6df
font_01_sfnt_off00005e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0B 19084 bytes
SHA-256: 9ede01f30692fb7b09932d1c7901b9b1b38205622bcfe306de47e28e48f2dda1

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