Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d01f517d13b824…

MALICIOUS

PDF

46.4 KB Created: 2021-05-12 02:06:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 72f8e1726d462a69e933f533422af281 SHA-1: a849db7ace1d81b4f8542ac353bce05abfa60289 SHA-256: e7d01f517d13b82424b199a55b6037c60d07d262395b1d83890c1569373dc754
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to a 'free generator / game hack' lure, specifically mentioning 'free Robux'. The primary external URI points to a suspicious domain likely hosting a malicious payload or phishing page. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering tactic to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/431946152/free-robux-com-roblox-game-hack PDF link annotation
    • https://smark.com.tw/image/data/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-link-app_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/robux-download_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-spin-coin-master-2021-link_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004754.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4754 27328 bytes
SHA-256: 680143d8e05e268e542710814050715ffeb8d6d76ca6298d199c53a5f724e649
font_01_sfnt_off000085d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D3 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off000092fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92FA 18348 bytes
SHA-256: 0a91f6cfdfc59c313b80ddaaf1db47d93b267e297f9a4be9f2abca10b90eba79

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