Malicious PDF — malware analysis report

Static analysis result for SHA-256 7887520259e85074…

MALICIOUS

PDF

35.4 KB Created: 2021-06-21 03:44:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 54685046fbfe05913d314da21af72a75 SHA-1: 3b47179180040d9b67b4b73fbc3fba88980cd367 SHA-256: 7887520259e850743b86ff2c273574a8f2910d0f82337446f09314202c2b81b3
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-roblox-game-codes-game-hack PDF link annotation
    • http://www.repion.com/uploaded_files/userfiles/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/roblox-sword-free_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/25k-robux-free_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/ideos-de-thanos-en-roblox-como-perfil-free_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/pokeballs-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/roblox-ro-ghoul-how-to-get-a-different-for-free_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/how-to-get-free-robux-money_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/roblox-no-kick-hack_GM431946152.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.repion.com/uploaded_files/userfiles/files/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3133 23080 bytes
SHA-256: 96cb50a2472e80f680bc45dbb99791702bcc7ae8de958994c1301e785fbac360
font_01_sfnt_off0000651d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651D 19084 bytes
SHA-256: 4a8e77d33e31ddd0b86bdf2dfda9bc40b1ac4cc962898f2ac77fdbd5d3e4d8f6

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