Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebbc1e9ce5d4a921…

MALICIOUS

PDF

46.1 KB Created: 2021-05-10 23:00:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: db6b0797874c456e3d5d53564899dc22 SHA-1: ea053d51909326fe2191fac236a2d2fcf169fde2 SHA-256: ebbc1e9ce5d4a9214b651b14722b937fa66f128d804d11f75cc0ec4e29736c9d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and free items, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the 'game hack redirect lure' heuristic suggest the document is designed to lead the user to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/free-roblox-clothes-for-your-avatar-game-hack PDF link annotation
    • http://medinup.pt/images/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/free-roblox-groups-with-funds_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_off00004922.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4922 25988 bytes
SHA-256: 1ffee3cf5ab94de04b09b9fe438fa805d98188d1913c8e4e9006f8e87c24ed30
font_01_sfnt_off00008316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8316 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00008fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FBD 18860 bytes
SHA-256: 1761c8fbdaafa52a42c2d9c8dd0fbea25e5bec314d4deea8139da4bd569234ce

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