Malicious PDF — malware analysis report

Static analysis result for SHA-256 a83c195de0668095…

MALICIOUS

PDF

35.4 KB Created: 2021-06-19 01:37:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8bde45024bd8a35399043b598f6d46c9 SHA-1: 360ce0879fa187c3f002f9ca573005c238e30976 SHA-256: a83c195de0668095411929a45b19bf05097c8daec743c22d08cbf2ffcf16ca27
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a large number of external links, many pointing to IP addresses, and lures users with download buttons and instructions to copy/paste content into a shell. The document body mentions 'hacking accounts' and 'free robux', suggesting a lure for potentially unwanted or malicious software. The presence of multiple PDF URIs and a link farm heuristic indicates a strong intent to redirect users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://netcdn.co/app/431946152/in-roblox-how-do-you-hack-accounts-game-hack PDF link annotation
    • http://118.174.0.244/UserFiles/File/coin-master-daily-free-spins-link-today_GM406889139.pdfPDF link annotation
    • http://118.174.0.244/UserFiles/File/robux-download_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/how-to-hack-speed-race-roblox_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-download-gui-roblox-twisted-murder_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-robux-site_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
font_00_sfnt_off00003199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3199 22512 bytes
SHA-256: 06715d8b5eb358ed4631fb3ac570cce101af35ff745c00d16fa742f473e44686
font_01_sfnt_off0000640c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640C 19392 bytes
SHA-256: 1db44d725234c27dc70c3ece96901db89bd39827379a4850a30ecb00be380914

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