Malicious PDF — malware analysis report

Static analysis result for SHA-256 00487150ba3baa2f…

MALICIOUS

PDF

44.2 KB Created: 2021-05-12 08:28:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b0e5826202a943e64484159e4dcbde51 SHA-1: 3032318c70c9b13dc0604e9c538504486ebb07f2 SHA-256: 00487150ba3baa2f14277d2daaa81885b47c5559c8c00bcf9394c8ad94cbf2e4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links designed to appear as 'free spins' or 'hacks' for popular games, directing users to external websites. The PDF_SEO_LINK_FARM heuristic indicates a large number of such links, suggesting a link farm or SEO poisoning tactic. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of the document, likely serving as a lure to malicious sites or for further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-free-daily-spins-2021-game-hack PDF link annotation
    • http://neltalen.nl/images/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://neltalen.nl/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/rewards-robux_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B5 23736 bytes
SHA-256: 1e15fbbe8d344175406586de49130edf38201dbbd9a0b9e9903edcb1907edc9a
font_01_sfnt_off00007e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9E 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8889 18708 bytes
SHA-256: b0ae70069365fabb7bafcfdf2bb0c5282fdcbef173ca23622b753a023242fa55

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