Malicious PDF — malware analysis report

Static analysis result for SHA-256 df80ca162e53a3fd…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 15:32:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b78b1298f34460fa9aa3822d594c13fd SHA-1: aa3f710817f65e46f5e79412def9ddb249454cbd SHA-256: df80ca162e53a3fdcdfcd4c8663666bd6c41be5f50bc75f5f612e8b4f174077e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure. The embedded URL, http://netcdn.tw/app/406889139/free-spin-coin-master-ios-game-hack, is directly associated with this lure. The document body also contains this URL, reinforcing the social engineering attempt to trick users into visiting a potentially malicious site. No scripts were extracted, but the overall pattern suggests a phishing or malware distribution attempt.

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.tw/app/406889139/free-spin-coin-master-ios-game-hack PDF link annotation
    • https://dentmate.com.tw/image/data/files/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-secret-free-items_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-images_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_off00003184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3184 22700 bytes
SHA-256: 6b166b16c1245b3d320bfd63539413280dff175181593ff9869223995e30e7a9
font_01_sfnt_off00006437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6437 18176 bytes
SHA-256: 560de3f7f1832d82f1f2e4602bc3b443b2969c5f538a6bdcdd925d39976778cb

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