Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f09f1b89341040…

MALICIOUS

PDF

34.6 KB Created: 2021-06-18 23:21:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b0bcdc0d2a1a6f2aae3963d9b93488a8 SHA-1: fb5cdabf138f960acb4fd6d08faf4a678c46376f SHA-256: 98f09f1b89341040fe4f13cd1ee5761b9b7e26dfae8231186ef83712cf17b21c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game hacks and currency, directing users to the URL http://netcdn.co/app/431946152/free-roblox-pins-game-hack. This heuristic, combined with the ML classifier's high confidence, indicates a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/free-roblox-pins-game-hack PDF link annotation
    • https://ezgolfer.com.tw/image/data/files/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/robux-free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-hack-robux-with-cheat-engine-65_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/regex-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-food_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBA 22780 bytes
SHA-256: 47d03b5ee0ec2de167de31d236ad9028d02a1df215482de57824eda86acc2116
font_01_sfnt_off000062b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B6 18924 bytes
SHA-256: b5af76c66cf4743b68f3d40c0f4c971d68ff963332be387172634091d3d64e48

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