Malicious PDF — malware analysis report

Static analysis result for SHA-256 54292c2b3ab3649e…

MALICIOUS

PDF

48.8 KB Created: 2021-06-11 08:01:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b02ba38c663596a1868d6d24a4d997b8 SHA-1: 247d4d5c205f554707e833643bfc4b6f75b50274 SHA-256: 54292c2b3ab3649ee3fa9d355a46c8068a51e4ddfc85cf5d011ef80892bfb21c
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 0.9796

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.tw/app/431946152/free-roblox-promo-codes-november-2021-game-hack PDF link annotation
    • http://inextpresident.com/images/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://inextpresident.com/images/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/roblox-cheat-codes-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/websites-for-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
    • http://inextpresident.com/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/free-bc-roblox-2021_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-robux-generator-no-human-verification_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_004_off0000519c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x519C 26880 bytes
SHA-256: 613a2c9526f9f9462a111a32081a90769242727afa0826073bcd031590b3af66
font_01_sfnt_off00008fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE2 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00009991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9991 19052 bytes
SHA-256: 2889041ce4fe7246bec698e534bba4c2e4df04d2f360a0872caec8164fd1cd9b

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