Malicious PDF — malware analysis report

Static analysis result for SHA-256 e61269f957d09d5c…

MALICIOUS

PDF

36.3 KB Created: 2021-06-26 13:57:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f8bdbc6ff9c5e43972e318f5e089a2ba SHA-1: 64276bdb130c8669fa2d8905ab95c5c963a3c565 SHA-256: e61269f957d09d5cb7c34937d73df63424f53d641e34775a33dcaeb836a22393
102 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on 'pustaka.mic.sch.id' and appear to be SEO-optimized pages offering game cheats and hacks. The primary URL 'http://netcdn.co/app/431946152/cheat-in-roblox-rocitizens-money-game-hack' suggests a direct download or exploit attempt. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to trick users into downloading malware.

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/cheat-in-roblox-rocitizens-money-game-hack PDF link annotation
    • https://pustaka.mic.sch.id/repository/free-10-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/robux-online_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-roblox-redeem-codes-that-havent-been-used-august-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/cheat-engine-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/rise-of-nation-money-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/http-free-robuxgg-verify-emailphp-k-46b7f7c2021298d4d20217c24aa2021duid-20210_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/robux-free-c_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/synapse-roblox-free-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-jailbreak-walk-through-walls-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/get-free-robux-no-fike_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-hack-roblox-robux-android_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3579 22724 bytes
SHA-256: 10406e4e98291f0def931545e6f1de5ee73a944e5efa164b51fa968fed6da4ae
font_01_sfnt_off00006823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6823 19332 bytes
SHA-256: d20ee149e020956dd56de825a00041c4ecc254c88662e5782208b3fecb2e9495

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