Malicious PDF — malware analysis report

Static analysis result for SHA-256 8226f7cc4ada362a…

MALICIOUS

PDF

42.1 KB Created: 2021-05-13 02:00:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 605056d0fd109023c25cb6d6589e622c SHA-1: 913052ab413cd470ecceb5e51876e725460620c7 SHA-256: 8226f7cc4ada362afb9e5e4654d0ac5892acae709946feab1403fdfecc9aca65
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 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-gold-cards-free-2021-game-hack PDF link annotation
    • https://rerempahanspa.com/ckfinder/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/minecraft_GM479516143.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/www-roblox-robux_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-robux-with-no-verification_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_off000048e3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E3 24940 bytes
SHA-256: cff8b91005b2b31a02808c978ac70613fbd042a5f95322860117323267a2f165
font_01_sfnt_off000081f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F6 18360 bytes
SHA-256: d5f784e8d5b6a4d28f0062806331642ef98a482c4c05a0dd4c725f7b2a97d1be