Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e3e3318467f353…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 23:58:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3e0ab25b259d695382fdc0033f5b811d SHA-1: 27c84ebbbacdd83c6b4e1d5a5b87de8ee41262b7 SHA-256: e7e3e3318467f35300a3ad103a2ed7f99c158d3dabb7150bcc75cfe032d7e54e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of embedded URLs, many of which point to pages offering game cheats or currency, indicating a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm heuristic further supports its malicious intent. The document body itself contains text related to 'speed hack on roblox' and includes numerous URLs, reinforcing the phishing and download lure attack pattern.

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-speed-hack-on-roblox-no-download-game-hack PDF link annotation
    • http://educhina.mn/editor/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/is-there-an-app-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-account-steal-hack_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-cheat-speed-simulator-2_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-cards_GM431946152.pdfIn 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_off00003077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3077 21920 bytes
SHA-256: a39c341ddf52473b6cdd61a013344e84296f5705f044ba075e8421d8cf634da9
font_01_sfnt_off000060d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D3 19340 bytes
SHA-256: a9b615703b5e899aefac11b438ff916f54f7553202af76339ce983db6d90d5b7

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