Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fd0bca9fd6605d1…

MALICIOUS

PDF

45.7 KB Created: 2021-05-10 13:59:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 897bf45b772cba19903ae4f189267a6c SHA-1: 5f8077b11634f4b3aa86bae69becd7c8c6fc1783 SHA-256: 4fd0bca9fd6605d1fe862582cd41bf429f84ebf6127e95c5bdfbe67e5ae8f67b
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 0.8484

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/431946152/roblox-builders-club-free-game-hack PDF link annotation
    • http://www.teapotjewelry.com/images/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003bad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3BAD 25376 bytes
SHA-256: 5aebbcf9cd7dea5acc60c6d8fada57a8e7921b9ea7b25c546f13f58fd5c05a22
font_01_sfnt_off000075f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F5 8176 bytes
SHA-256: 94807e10724bbfedec7e23f7877424548c8b8f443ba6311154353eded7db16e7
font_02_sfnt_off00009110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9110 18384 bytes
SHA-256: ca5233fc9ce80ece0aee0c96fa35d529a08b6cb3fb28871df95ba3e8db8004f0

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