Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eaa0c65f6d40ea5…

MALICIOUS

PDF

43.7 KB Created: 2021-05-19 16:57:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 554ec3f30c9856b79a98cd286b927506 SHA-1: 51701d9fab8fd16edb7ace22b1ef022800344bee SHA-256: 9eaa0c65f6d40ea55783b5be597066ce9a6eaa6804ba2e9f5b72bb5aaa5567b0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF gateways for game-related cheats and free currency. The document body itself contains a prominent link to 'netcdn.xyz' which promises free Robux, a common lure for phishing and malware distribution. The presence of a large number of external links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/get-free-robux-without-human-verification-game-hack PDF link annotation
    • http://pwpyemen.org/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/rbxdemon_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/robux-gratis_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/roblox-rewards_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/promo-codes-to-get-free-robux_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_off000048eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48EB 29000 bytes
SHA-256: b20379d70850c9ab856ee9cca634792b062109946e9741059ee6e2b91b6e0528
font_01_sfnt_off000085ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AE 19224 bytes
SHA-256: d26e558c8d9f3aa3a60cf99b5f2b698b808b007009279a89da7a3b2992804aa3

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