Malicious PDF — malware analysis report

Static analysis result for SHA-256 6287845483cf090c…

MALICIOUS

PDF

33.8 KB Created: 2021-06-28 22:25:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 796ace91767a09a9d8c2bc3eb8801579 SHA-1: d9aad619ebeb12f4c4c5d841f0c67f05e3562702 SHA-256: 6287845483cf090c1d0eb7849760a219d05ef428b678fea47bd08929cfcb4f4f
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on digilib.ulm.ac.id and appear to be SEO-optimized pages for game hacks and cheats. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful files. The document's content and structure strongly suggest it is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/boku-no-roblox-hacker-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-sand-simulator-infinite-backpack-code-hack-android-noscript_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/hacked-money-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/noclip-hack-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/code-to-access-a-game-that-gives-90m-robux-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/csgo-roblox-hack-sc-ript-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-jailbreak-noob-vs-pro-vs-hacker_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-150-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-restaurant-tycoon-money-cheat-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/5-games-that-give-free-robux_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_off00002eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAC 22120 bytes
SHA-256: 2f3899177f7238960508b5baa50349804b0a07fc646b1f587e0f88cfc5b7fcf7
font_01_sfnt_off00005fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA7 18796 bytes
SHA-256: 09d409f36c304fb7e1e415b119f02128d470164ec2c991b715296dc54e0e5453

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