Malicious PDF — malware analysis report

Static analysis result for SHA-256 980710fd3125d0b6…

MALICIOUS

PDF

46.9 KB Created: 2021-05-12 04:02:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ba56aaddf16391dda9d35c04428d0224 SHA-1: 05a83b53ff449090ca43aae538bca8af614cf1ba SHA-256: 980710fd3125d0b62571b494b800c56d72cfe6f75183b7c9c47e3be3687937d6
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are related to game hacks and cheats, suggesting a lure for users to download malicious content or engage in phishing. The presence of a fake CAPTCHA heuristic further supports the malicious intent by indicating an attempt to trick the user into performing an action. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.xyz/app/406889139/coin-master-hack-without-verification-site-zyngaplayerforums.com-game-hack
    • http://perpus.poltekeskupang.ac.id/repository/http-blackgamesus-coinmasterhack_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-daily-free-spins-blogspot_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-spins-in-coin-master-2021_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-112-2-hacked-client_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-card-collection-hack_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-coin-master-spins-and-coins_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spins-link-app-download_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-now_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spins-hack-iphone_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-spins-coin-master-generator_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-a-free-minecraft-account_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-spin-in-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-pet-food-in-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-coin-master-spins-daily_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-link-daily-get-free-spins-amp_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-coins-in-coin-master-game_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e57.bin
b5acf6ad16d44d773ee41afa9b178b131eea2911ada442b025eeb79104e04467		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E57 25136 bytes
font_01_sfnt_off00008782.bin
381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8782 2824 bytes
font_02_sfnt_off00009125.bin
d42cd4a3ab6d974a23394c8be713da621cd6497735f7b6d74e749fa263947452		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9125 19492 bytes

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