Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89a556355494941…

MALICIOUS

PDF

40.8 KB Created: 2021-05-16 22:03:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5efbfe15e6f326fa791fc8a7a049ecc8 SHA-1: c9ed43688bbeb617dc05a8bd6d1d71368c6908b5 SHA-256: e89a556355494941857b1167ada708a245f7339cb8677a840df95b1667792c2b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which point to websites offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of numerous SEO-optimized PDF links suggests a link farm designed to distribute malware or lead users to malicious sites. The document body, though partially corrupted, contains a URL that appears to be a direct download link for a game hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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/hack-coin-master-apk-3.3-game-hack PDF link annotation
    • http://torkelson.se/images/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://torkelson.se/images/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://torkelson.se/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://torkelson.se/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://torkelson.se/images/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://torkelson.se/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://torkelson.se/images/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://torkelson.se/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004579.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4579 24464 bytes
SHA-256: df406848495499e2a7096e15cf338a2862cdf8fec7849b910974cf9f9a2627d6
font_01_sfnt_off00007d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D68 18132 bytes
SHA-256: 8394b5af02312d864298b83d4844c734f19ebfd31514e1fde380aa35c4903e0f

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