Malicious PDF — malware analysis report

Static analysis result for SHA-256 d50028849c60f4fd…

MALICIOUS

PDF

35.3 KB Created: 2021-07-01 12:17:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 117477f8715c5a8f6faec29eededeaad SHA-1: 4f1eeb0338efadb113c9c42971ee57486f0a4d54 SHA-256: d50028849c60f4fdbfc748c4d1d7cbd945363d84fb6a7a40dc8a54c936202758
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/roblox-super-villain-tycoon-cheats-game-hack PDF link annotation
    • http://atiltd.com.tw/upload/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-call-roblox-for-hacked-account_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-roblox-hacks-for-good_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-get-free-robux-and-bc_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/robux-hack-911_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robuxs-hacks-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/magitan-roblox-hack_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-name-hack_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-hacks-commands_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/can-you-get-roblox-on-ps4-for-free_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-codes-2021_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_off00003176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3176 22376 bytes
SHA-256: 7253877857028433846c457395f3a198b99442dac56ab6d73053b05523f1c0e2
font_01_sfnt_off0000636c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636C 19508 bytes
SHA-256: 07921fccacce14eab2440390b7fb1a2709324473171098acec588df0a3a5e1aa