Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2a06664c4bc149…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 05:42:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 53b8b549c86c425a64104bab531010ca SHA-1: 81b7ee2eeb0940fb2408f4d928ff24000ac7a822 SHA-256: 2e2a06664c4bc1497abe93bdc414fc081af58d02487a7408ef91c0344bea71c6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a malicious SEO link farm, designed to drive traffic to download sites. The document contains numerous embedded URLs, many of which point to other PDF files with titles suggesting hacks or cheats for games like Coin Master. The primary URL, https://netcdn.online/app/406889139/coin-master-hack-mod-apk-2021-download-game-hack, is likely the intended download destination for a malicious application. The presence of a machine learning model flagging this PDF as malicious further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-hack-mod-apk-2021-download-game-hack
    • http://elibrary.smknesbu.sch.id/repository/coin-master-golden-card-hack_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-spins-coin-master-november-2021_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-100-free-spins-link_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-coin-master-without-root_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-link-today_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-spin-link-today_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-online-hack-download_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/earn-free-robux-for-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-stuff-on-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/get-me-robux-for-free_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-report-hacker_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/earn-robux-now_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-rewards-free-spins_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-coins-spins_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-items-codes_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-spin-coin-master-instagram_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005184.bin
60d1841c2cc9a547c31572a227ccba368a434ca551e8c0439b6431e0940021af		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5184 24052 bytes
font_01_sfnt_off00008860.bin
d0ae2a6335f6e1d1dcb08c16f477cde67ff9a40c73b70c4521b3987adefa71de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8860 18876 bytes

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