Malicious PDF — malware analysis report

Static analysis result for SHA-256 9111709fd741b3d3…

MALICIOUS

PDF

33.5 KB Created: 2021-07-19 14:42:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b01be57e05a1b7fb2baab1e07660cb83 SHA-1: 0e4f4b1a3ed0f677e5a3115b0ecbcdc2333488ba SHA-256: 9111709fd741b3d3dc74ce4d8c37e611b69c95b0f41daaddbc754544303bf543
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors, including one that masquerades as a 'free generator / game hack'. The document body includes a call to action to 'CLICK HERE TO ACCESS TIKTOK GENERATOR GD', further reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/835599320/free-college-textbooks-tiktok-game-hack In PDF document text
    • http://hindicenter.com/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://hindicenter.com/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://hindicenter.com/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://hindicenter.com/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://hindicenter.com/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://hindicenter.com/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://hindicenter.com/images/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://hindicenter.com/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://hindicenter.com/images/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://hindicenter.com/images/minecraft-free_GM479516143.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_off00002fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE0 22232 bytes
SHA-256: 15927b709564db0e057aa9184b68d121705c51c2da80a26656214e88f8b58884
font_01_sfnt_off0000613e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613E 18184 bytes
SHA-256: c51aa8ed87b8ee8755a1ecd789814fb67703fc10c946440f5ae6e88abb0f8eda

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