Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c45c3e712ab642…

MALICIOUS

PDF

32.7 KB Created: 2021-07-19 19:31:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6699f033b38bc1799472f3795631824c SHA-1: 39cc20d034f7e8047181cad22b778e3436009e88 SHA-256: 00c45c3e712ab64270582c56da6e4e55bb90099bbc2819e05edb857749c9f95f
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically advertising a 'free generator / game hack'. The document body also contains a call-to-action phrase and multiple embedded URLs, including the primary malicious redirector. This indicates a social engineering lure designed to trick users into visiting malicious sites, likely to download further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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.tw/app/479516143/minecraft-education-free-game-hack In PDF document text
    • http://www.msts.ac.th/UserFiles/File/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/coin-master-free-spin-and-coin_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F98 21576 bytes
SHA-256: cf701db40a4c45134e11f491b47bf1f55111855af6112428a19db909126e6536
font_01_sfnt_off00005e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E85 18024 bytes
SHA-256: 50b2d5ff22f0b3ffa840834f12cbec9953eabd3c4e347b5eb6eb3aff22325aed

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