Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bf3dba88825615…

MALICIOUS

PDF

45.8 KB Created: 2021-06-09 16:13:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8bd11dab6e285dd8750fe85f69d54b9b SHA-1: f8674a541b0746e93e5404a2ca0a5217be316bca SHA-256: 27bf3dba88825615376d828e8a01bfebd39da78e094239f688734e162cc83a87
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which appear to be SEO-optimized for terms like 'hack' and 'free spins'. The ML classifier strongly indicated maliciousness, and the presence of numerous links to potentially deceptive content suggests a lure for users to click through to malicious sites or for SEO manipulation. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/how-to-hack-roblox-gta-5-game-hack
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-to-hack-someone-on-roblox_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-free-spins-link-download_GM406889139.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-hack-iphone_GM406889139.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/robux-free-c_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-robux-just-enter-username_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/https-webrobloxcom-catalog-202120215-hacked_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-to-give-robux-on-mobile_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/roblox-how-to-get-free-clothes_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-hack-spins-apk-download_GM406889139.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/bloxawards-com-earn-free-robux_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-unlimited-spin-hack_GM406889139.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/pokemon-go-free-coins-apk_GM1094591345.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-to-actually-get-free-robux_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/pubg-uc-600_GM1330123889.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/minecraft-server-free-trial_GM479516143.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/blox-supply-free-robux_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/roblox-render-free-to-use_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005601.bin
8339d7751bd0d68c7e3ec5081ed910c13d993b24097f5ac1ac5451e1b30d26c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5601 24976 bytes
font_01_sfnt_off00008f1d.bin
74046b3cc08c3ebd82481fa51c5cca4b57007ec1b5248561f347c3f02143db8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1D 18584 bytes

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