Malicious PDF — malware analysis report

Static analysis result for SHA-256 8478328023e94529…

MALICIOUS

PDF

34.5 KB Created: 2021-06-19 18:34:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7319fa9ccfca97a8006a9930630c1a62 SHA-1: 1bccc974d772c2ce0dd22908915a4b0722ba4860 SHA-256: 8478328023e94529ed3e62d101b5c2eaefbe9c02630006866d0437cc8e833c2d
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/free-robux-in-roblox-2021-game-hack PDF link annotation
    • http://apcupschennai.com/images/pokemon-go-free-602_GM1094591345.pdfIn PDF document text
    • http://apcupschennai.com/images/free-robux-email_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/how-to-get-free-robux-google_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://apcupschennai.com/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/duck-roblox-free_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/descendants-2-on-roblox-that-is-free-from-intel_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/jetpack-simulator-hack-roblox-v3rmillion_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/free-roblox-exploits-no-virus_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/free-robux-hack-windows-10_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://apcupschennai.com/images/get-free-gold-cards-in-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_off00002e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2C 22752 bytes
SHA-256: 3ea9a1dead7ebc8b5cb59c6f330523cc8f56209eb77f13ecbae441264a71c63c
font_01_sfnt_off00006154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6154 19192 bytes
SHA-256: a9511bf64986e2f34c96ff82e0d1d3650ccd34242eb53e4850e4fa9a76257329

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