Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e02667898960171…

MALICIOUS

PDF

42.5 KB Created: 2021-05-16 18:04:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: df45991d683f3d029c78379041266c4b SHA-1: fa94cdab1ec3926cf2ddd01c9ee46e02d213967f SHA-256: 4e02667898960171520eb6f13b396b6bf68081e4132e650b3c2d30fd9c600c3f
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a primary external URI, all pointing to websites offering game hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a tactic to distribute malicious content or redirect users to phishing sites. The ML classifier also strongly flagged this PDF as malicious, reinforcing the assessment of a malicious lure.

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/406889139/coin-master-time-speed-hack-game-hack
    • https://www.acacss.com/images/how-to-get-robux-on-phone_GM431946152.pdf
    • https://www.acacss.com/images/free-coins-for-coin-master_GM406889139.pdf
    • https://www.acacss.com/images/can-i-play-roblox-for-free_GM431946152.pdf
    • https://www.acacss.com/images/free-robux-without-offers_GM431946152.pdf
    • https://www.acacss.com/images/coin-master-hack-2021-free_GM406889139.pdf
    • https://www.acacss.com/images/coin-master-free-gold-cards_GM406889139.pdf
    • https://www.acacss.com/images/free-coins-coin-master-today_GM406889139.pdf
    • https://www.acacss.com/images/rbx-gg-free-robux_GM431946152.pdf
    • https://www.acacss.com/images/coin-master-hack-apk-free-download_GM406889139.pdf
    • https://www.acacss.com/images/free-robux-no-verify-2021_GM431946152.pdf
    • https://www.acacss.com/images/roblox-robux-hack_GM431946152.pdf
    • https://www.acacss.com/images/free-coin-and-spin-link_GM406889139.pdf
    • https://www.acacss.com/images/how-do-you-get-roblox-money_GM431946152.pdf
    • https://www.acacss.com/images/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdf
    • https://www.acacss.com/images/blogspot-free-spins-coin-master_GM406889139.pdf
    • https://www.acacss.com/images/free-robux-codes-generator-no-verification_GM431946152.pdf
    • https://www.acacss.com/images/minecraft-free-play-no-download_GM479516143.pdf
    • https://www.acacss.com/images/coin-master-free-spins-hack-ios_GM406889139.pdf
    • https://www.acacss.com/images/how-to-hack-a-roblox-account-2021_GM431946152.pdf
    • https://www.acacss.com/images/coin-master-free-coins-link-2021-deutsch_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a6f.bin
fad6a493a7d3268645d0ea3b525a410d3823d25e1c5974f1451b6975fa0d1560
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A6F 25664 bytes
font_01_sfnt_off0000838c.bin
48a88090a17b83cc75cc1025c3c556c588a086eec17c5d02d3fe48633746b340
pdf-font-stream PDF embedded font (sfnt) at offset 0x838C 18324 bytes