Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac5c0497803f8c67…

MALICIOUS

PDF

35.2 KB Created: 2021-07-09 11:15:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 47709b1c78d1aaeeea0b80523549518d SHA-1: 5d7993a15477c1514d0d781c16ff64741faa7405 SHA-256: ac5c0497803f8c67650a98a2ab5fe8a0a6c882bffc7b4a3d1c64606c7af21203
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.tw/app/406889139/coin-master-card-link-free-game-hack PDF link annotation
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/cheat-engine-65-download-roblox_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/how-to-get-free-unlimited-robux-and-obc-lifetime_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/how-to-hack-anyne-with-editthiscookie-roblox_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/free-roblox-promo-code-genarator_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/how-do-people-get-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/hack-de-luckyblocks-roblox_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/free-accessories-alfheim-online-roblox_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/roblox-naruto-final-bond-lvl-hack_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/speed-hack-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/free-adidas-pants-roblox_GM431946152.pdfIn PDF document text
    • http://www.ventureit.com.sg/uploaded_files/userfiles/files/free-robux-best-hack_GM431946152.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
stream_002_off00003178.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3178 23524 bytes
SHA-256: c4c7f2761648d5b8810e44f7e8347f1687e858748d0956f15d81f9b34648ca5e
font_01_sfnt_off000066ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AD 18340 bytes
SHA-256: 125df22db7ff6d9e99adc6a2128c08e95da839009b63521109df6d29364d5411

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