Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c1c45a3890c52c9…

MALICIOUS

PDF

34.4 KB Created: 2021-06-28 00:24:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 07ec9a6d605918b4f211636c9de9bd66 SHA-1: bab21e72da6424a2610f8368ade58fa5bf9e4b2c SHA-256: 1c1c45a3890c52c9ed31746532a2afdc5354a76160b8dc931aa0ae21975a519c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are structured as SEO-optimized PDF gateways. The primary URL, http://netcdn.co/app/431946152/how-to-get-free-robux-gift-card-codes-game-hack, and the numerous links hosted on perpus.unbi.ac.id suggest a lure for free in-game currency or items, a common tactic for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to malicious content.

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/how-to-get-free-robux-gift-card-codes-game-hack
    • http://perpus.unbi.ac.id/slims7_cendana//repository/free-bling-bling-card-coin-master_GM406889139.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/free-robux-no-human-verification-hack_GM431946152.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/100-free-spins-for-coin-master-2021_GM406889139.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/coin-master-villages_GM406889139.pdf
    • http://perpus.unbi.ac.id/slims7_cendana//repository/claim-gg-free-robux_GM431946152.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/coin-coin-master-hack_GM406889139.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/roblox-how-to-get-free-stuff-from-catalog_GM431946152.pdf
    • http://perpus.unbi.ac.id/slims7_cendana//repository/how-to-sue-roblox_GM431946152.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/coin-master-hack-tool-v1-9_GM406889139.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/coin-master-hack-tool_GM406889139.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/coin-master-free-spins-link-june-2021_GM406889139.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/get-800-robux-for-free-gamekit_GM431946152.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/auto-keyboard-roblox-free_GM431946152.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/free-spin-and-win-coin-master_GM406889139.pdf
    • http://perpus.unbi.ac.id/slims7_cendana//repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • http://perpus.unbi.ac.id/slims7_cendana//repository/free-coins-coin-master-link_GM406889139.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/free-spins-on-coin-master-link_GM406889139.pdf
    • http://perpus.unbi.ac.id/slims7_cendana/repository/download-hacked-games-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ece.bin
10315ae4eae36138f7521b2072b2f8804155fd94439c0866a69d1bf51e116c2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECE 22396 bytes
font_01_sfnt_off00006079.bin
fafb4ed9e61e21bf70d6f5220cfbe000d8fd05b6b22885af89428efc19440718		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6079 19280 bytes

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