Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d3bbd0558b6bcaa…

MALICIOUS

PDF

43.6 KB Created: 2021-05-11 20:03:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a0a510fabbef689d3ad2bb57d1c18c5e SHA-1: 5cde892f4792470a3a3761499d83d280698e3d1d SHA-256: 5d3bbd0558b6bcaac4fc2ed8138efcd0a781a1d50dde10b7dd15b82dcfcd8528
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are presented as "hacks" for popular games like Coin Master and Roblox. The PDF_SEO_LINK_FARM heuristic indicates a mass of external links, and the ML_NYX_PDF_MALICIOUS score is very high. The embedded URLs likely lead to malicious sites designed to trick users into downloading malware or providing personal information.

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/coin-master-hack-no-survey-2021-game-hack PDF link annotation
    • http://mycookingpot.com/images/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://mycookingpot.com/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/free-robux-on-ipad_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
stream_003_off00004a48.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A48 25928 bytes
SHA-256: d7a060e8025f6c6667fbe50a4f47e12094fda1bfa65585e23d260b6cf87b9537
font_01_sfnt_off000086f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F5 18552 bytes
SHA-256: 08b93b8e79f8f8fdf66b2b731fa8b5bfc2f7a48790bf7a909dc60fe86eb0a381

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