Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1af093f45de8a84…

MALICIOUS

PDF

51.2 KB Created: 2021-06-02 20:49:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 210ed1382e761798d55520e9edf0ed6b SHA-1: 2ce24bce31ff234d319e6d469d518dd4c8039e0b SHA-256: e1af093f45de8a84279ddbce12ed1a224282a3273050d68dc8f9014ef2c55e27
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to websites offering game cheats and virtual currency. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. The document body and embedded URLs suggest a lure for users seeking in-game advantages, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9685

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/free-black-clover-roblox-accesories-game-hack PDF link annotation
    • http://dieter-sauter.com/images/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/moon-active_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f22.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F22 25680 bytes
SHA-256: 63f74588df9dc4e52f7cc56e57cb6bed7b2e6fce856c78c35d5b27b390f14f6e
font_01_sfnt_off00008b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B32 3964 bytes
SHA-256: f6b9a386ee4e0aff622a98b2230905da71eab0ca98398cb52018fda3528d3e2a
font_02_sfnt_off0000988f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x988F 3396 bytes
SHA-256: e59bc53cd4c0ee65dc1533becad2866f345dcb060e6c68bb8187d21cb9f973ee
font_03_sfnt_off0000a481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA481 18580 bytes
SHA-256: cf14562fa6785a3255cd99cf8f73af21b790e4d8bf146e837d15539f3821368d

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