Malicious PDF — malware analysis report

Static analysis result for SHA-256 03962818f6eea749…

MALICIOUS

PDF

43.1 KB Created: 2021-05-14 21:02:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 580de702b377b10be177bc9cdebbd080 SHA-1: 18b25b62369b3699a7ac7bad46d80fac47baf164 SHA-256: 03962818f6eea749bcd761308b85f5b2ab14421afe9aac90f9790767f751a4d6
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/431946152/roblox-promo-code-to-get-free-robux-game-hack PDF link annotation
    • http://aiyta.com/images/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://aiyta.com/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://aiyta.com/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://aiyta.com/images/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://aiyta.com/images/hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://aiyta.com/images/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://aiyta.com/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://aiyta.com/images/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://aiyta.com/images/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://aiyta.com/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://aiyta.com/images/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://aiyta.com/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://aiyta.com/images/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://aiyta.com/images/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://aiyta.com/images/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://aiyta.com/images/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://aiyta.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://aiyta.com/images/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • http://aiyta.com/images/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://aiyta.com/images/coin-master-hack-tool-no-human-verification_GM406889139.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_off00004936.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4936 25472 bytes
SHA-256: b29ca6537cb1846d45d6af366495541454d66f05b9e6948667f3895f41083a0e
font_01_sfnt_off000084ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84AC 18780 bytes
SHA-256: 57e6eef1fbc3af66d8c5b48d94799429ebee4b6256a60c8d2844d61f1a05fc0c

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