Malicious PDF — malware analysis report

Static analysis result for SHA-256 d095ea3aad88f846…

MALICIOUS

PDF

41.9 KB Created: 2021-05-14 14:28:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 923ae42433bce66454963533a1e26498 SHA-1: 2dd5a13d00b9ac5145447088df968caea0436405 SHA-256: d095ea3aad88f846f9281929bbee4c31b3549f0eb34504b0e90e9b2ef21677f2
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a primary URL that lead to pages offering free game-related items, indicative of a phishing or scam lure. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to drive traffic to potentially malicious sites. The ML classifier also flagged the document as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-face-roblox-game-hack
    • http://alexanderautos.co/images/roblox-promo-codes-for-free-robux_GM431946152.pdf
    • http://alexanderautos.co/images/roblox-redeem-codes-free_GM431946152.pdf
    • http://alexanderautos.co/images/minecraft-pe-hacks_GM479516143.pdf
    • http://alexanderautos.co/images/coin-master-hack-2021-link_GM406889139.pdf
    • http://alexanderautos.co/images/free-spins-for-coin-master-without-human-verification_GM406889139.pdf
    • http://alexanderautos.co/images/how-do-you-get-free-roblox_GM431946152.pdf
    • http://alexanderautos.co/images/300-daily-free-spins-coin-master_GM406889139.pdf
    • http://alexanderautos.co/images/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdf
    • http://alexanderautos.co/images/easy-robux-com_GM431946152.pdf
    • http://alexanderautos.co/images/coin-master-daily-free-spins-blogspot_GM406889139.pdf
    • http://alexanderautos.co/images/minecraft-download-free-download_GM479516143.pdf
    • http://alexanderautos.co/images/rbl-gg-free-robux_GM431946152.pdf
    • http://alexanderautos.co/images/get-free-robux-no-human-verification_GM431946152.pdf
    • http://alexanderautos.co/images/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://alexanderautos.co/images/download-coin-master-apk-hacked_GM406889139.pdf
    • http://alexanderautos.co/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdf
    • http://alexanderautos.co/images/coin-master-daily-free-spins-2021_GM406889139.pdf
    • http://alexanderautos.co/images/coin-master-admin-free-spins_GM406889139.pdf
    • http://alexanderautos.co/images/coin-master-hack-org_GM406889139.pdf
    • http://alexanderautos.co/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000468a.bin
56964b30b139f4c8170031c5fd8826fcb06d56f342c85afd36e35b5a35684fce
pdf-font-stream PDF embedded font (sfnt) at offset 0x468A 26184 bytes
font_01_sfnt_off000081d7.bin
89cd2a226c48b85e3fd50639e1c54ff12a7aea6a284b12bd929af74d1649954d
pdf-font-stream PDF embedded font (sfnt) at offset 0x81D7 18176 bytes