Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d861c61365e3aba…

MALICIOUS

PDF

34.6 KB Created: 2021-07-02 07:53:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dbc44ed71e80c8c07461bee425cc3a7f SHA-1: d4afbaec3e69e18d184b0e4c497e31e3c3c82ec5 SHA-256: 9d861c61365e3abada40b588a7951f8804a4f973c1846df0d18d12d03a2cc1a5
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 0.9980

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/https-robux-hack-top-game-hack PDF link annotation
    • https://opac.heritagejkt.org/repository/escape-mario-area-51-roblox-game-download-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-access-code_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-free-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/ispoofer-pokemon-go-free-key_GM1094591345.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/hack-money-for-roblox-lumber-tycon_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-instantly-no-verification_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-25-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/pubg-uc-cheap-price_GM1330123889.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/hack-btools-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-catalog-free-wings_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/is-there-an-actual-hack-that-work-for-coin-master_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
font_00_sfnt_off000030a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A4 22320 bytes
SHA-256: 34e9a51d09ff4432b67f59676e0190bd271ed6190474c21a5508950296f151fb
font_01_sfnt_off0000621e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621E 19004 bytes
SHA-256: 95d58961a8d30a9b00774ad7cbc7c945b78d1f6b138ba6f6d756c621419e93b1

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