Malicious PDF — malware analysis report

Static analysis result for SHA-256 167de191821c274b…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 05:40:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d790e9bb0717e9136b875674fbc40cbc SHA-1: c6471beadb608b3d4927473db06a55c8ef6ea631 SHA-256: 167de191821c274b756c21d56221f655bd721a4995868ce4ad9f89d0f58579fb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free game hacks' for popular titles like Roblox and Coin Master to entice users. It contains numerous embedded URLs pointing to potentially malicious sites that likely host further malware or phishing content. The ML classifier strongly indicated maliciousness, and the PDF's structure and content align with social engineering tactics to drive initial compromise.

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/431946152/roblox-dominus-free-game-hack PDF link annotation
    • http://autoskola-scp.com/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-hack-roblox-jailbreak-2021-mod-menu_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-roblox-birthday-cards_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/hacks-to-get-money-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-hat-roblox-codes_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-rocitizens-cheat-codes-may-2021_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
font_00_sfnt_off00002dfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFB 22252 bytes
SHA-256: 9d4f9bd9b91c8d97c1f98fd5092f66d0d9a052a651cfeaa25659b50b88bd9008
font_01_sfnt_off00005fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA1 19340 bytes
SHA-256: 51aabce8a0fbddbcaac96e5367ec788fa01bdb555ce302519f38501c33e57caf

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