Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eab79da6d2f5097…

MALICIOUS

PDF

33.5 KB Created: 2021-06-27 22:10:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0e49c061b5a62d59335965621cb5fc17 SHA-1: 65d375338eea6b2194beceea780ad13296422a52 SHA-256: 3eab79da6d2f50970c120d9734b72d535e227314c7df5858d373f5d3a6e238d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of free game hacks and currency generators to trick users into clicking malicious links. The document contains multiple embedded URLs that point to redirector infrastructure known to host malicious content. The primary redirector URL is http://netcdn.co/app/431946152/free-abs-t-shirt-roblox-game-hack, which likely serves as a gateway to further malicious payloads or phishing pages. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malware distribution attempt.

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 http://netcdn.co/app/431946152/free-abs-t-shirt-roblox-game-hack In PDF document text
    • http://proyetec.com.co/aym_image/files/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-how-to-get-free-clothes-no-bc_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-hack-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/malilokawaii-hack-de-roblox_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/alone-battle-royale-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-doomspire-brickbattle-hack_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-roblox-accounts-youtube_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/redline-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/auto-clicker-download-free-roblox_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-champion-t-shirt-and-bag-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off00002f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8C 21372 bytes
SHA-256: 1e3921d80b908e379aef6b32807b0b275ff6a0f53479ec0ea8d61887c78ebf4e
font_01_sfnt_off00005dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBF 19076 bytes
SHA-256: a1d3c7c3c7a992ba19e43873a85040ebf9eeb1f1267544d86368709934434158

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