Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d9bfeba16f4e0f6…

MALICIOUS

PDF

43.2 KB Created: 2021-05-18 02:24:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 33a134f22debcff31cad7cc528a58654 SHA-1: c64d162d15380d4eda00cd886529e40d456ae9ca SHA-256: 7d9bfeba16f4e0f696d0b0a87cff457d8edfc07e8b0759ab145c9f62debdd6d2
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, forming a link farm, that direct users to websites offering game hacks and free spins. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious lure designed 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/406889139/is-there-any-tricks-or-working-hacks-for-coin-master-game-hack PDF link annotation
    • http://mypizzaoven.com/images/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://mypizzaoven.com/images/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/coin-master-free-spins-link-2021-twitter_GM406889139.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
stream_003_off00004b33.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B33 25560 bytes
SHA-256: 2d9971838e219d4d654928b7ec65b329ed42b8be7913076bb85c72ea9cbb52ef
font_01_sfnt_off00008564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8564 18712 bytes
SHA-256: bf9b6bef81a86b28c31fcdcf4878edb32919432b4a7a59645f7f2c7dbce8e9d8

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