Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bd6084169b1649b…

MALICIOUS

PDF

41.7 KB Created: 2021-05-19 10:52:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9d4423ced23eb65829ae88cdc99fc532 SHA-1: c9a0842ca6bc7004e478c7dae0230c7ea462b862 SHA-256: 5bd6084169b1649be89e735c4d18b38552d142d9feff91e7723344a3d263fcdf
142 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure to trick users into clicking malicious links, which is a common social engineering tactic. The document body and extracted URLs suggest a scam related to in-game currency or virtual items. The presence of numerous external links, many pointing to PDF files with SEO-like titles, indicates a link farm designed to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-robux-safe-game-hack PDF link annotation
    • http://www.sapaengineering.kz/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/pokemon-go-free-pokemon-hack_GM1094591345.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-hacks-on-roblox_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_off00004732.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4732 24764 bytes
SHA-256: 821c7d67ea87388f52252abe9f239ebc7cf30d54ba7224591f4b339408ee449d
font_01_sfnt_off000080a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A8 18244 bytes
SHA-256: 393a0339ec2761f14ea9b29efa8c9c5fc9788b4979bd41a030a3ecef46023b5f

Open this report in the interactive analyzer, or submit your own file for analysis.