Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdbb9e4d8a9d2a1a…

MALICIOUS

PDF

44.5 KB Created: 2021-05-13 05:10:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4a6c21f30dccad492de6d4858ff9a2a8 SHA-1: 558cf34d723820a2cd65d71dfefcfb65e5a7d72c SHA-256: bdbb9e4d8a9d2a1a299ae652e332dccf4d30af76e09341cfdf72819d36d59a84
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which are SEO-optimized slugs pointing to gaming-related freebies. The primary URL, 'https://netcdn.xyz/app/431946152/how-to-make-roblox-clothes-for-free-game-hack', suggests a lure for free in-game items. This pattern is commonly associated with phishing or malware distribution campaigns, aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-make-roblox-clothes-for-free-game-hack PDF link annotation
    • https://www.sauvonsleclimat.org/images/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/minecraft-114-download_GM479516143.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/coin-master-free-spins-hack-iphone_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_off000048a8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A8 28564 bytes
SHA-256: 47ab00efb7649a439722db297a93c4608460c1d23921b3ecf2eb5f1228136cfd
font_01_sfnt_off000089e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E7 18976 bytes
SHA-256: 75869b94c2b17b25dac59f0b0f7f9ff270f85e9e7170da1a335b6396ed3bda83

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