Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec6e853c12f4985…

MALICIOUS

PDF

44.2 KB Created: 2021-05-13 08:01:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 10e1ec64b072e304da936a77952f9678 SHA-1: 4c0772b2c2c4e8a525f2b7c4a773828841168d9a SHA-256: 0ec6e853c12f4985d32037886176e54b8d144afb12322bed97444cc959cf5aea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game cheats and free currency to entice users into clicking embedded links. The document contains multiple links pointing to known malicious redirector infrastructure, specifically `https://netcdn.xyz/app/406889139/free-spin-coin-master-link-today-game-hack`. The presence of these malicious links and the overall deceptive nature of the content strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/406889139/free-spin-coin-master-link-today-game-hack In PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/mcpe-download_GM479516143.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://uas.com.my/uploaded_files/userfiles/files/how-to-get-robux-on-roblox_GM431946152.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
stream_003_off00004954.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4954 28400 bytes
SHA-256: aa3aea22fa2cc3ad84907451c93a50147de8dd1b4054de0167cc041412ec4af9
font_01_sfnt_off00008a44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A44 18412 bytes
SHA-256: b350531339c9517a18660b7b0575dfec4269b2a4083a2d9381830f178b2ed085

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