Malicious PDF — malware analysis report

Static analysis result for SHA-256 da6686df2d5d9f21…

MALICIOUS

PDF

31.2 KB Created: 2021-07-19 00:47:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 049cca70eb68d1d590a4cecd94677faa SHA-1: 9ac9a350fd9abd929e25d90b7125401be9fcbe10 SHA-256: da6686df2d5d9f213de582b6601dd899232ca00509659b5ddf078f8b3241a109
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as offers for game hacks and free items. The document body explicitly mentions 'Minecraft Free No Download' and 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The primary malicious URL identified is http://netcdn.tw/app/479516143/minecraft-free-no-download-game-hack, which is part of a chain of redirectors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9393

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-free-no-download-game-hack In PDF document text
    • http://geemarco.com/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://geemarco.com/images/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • http://geemarco.com/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://geemarco.com/images/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.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_off0000263f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x263F 22428 bytes
SHA-256: 090d9d84fb775d398b5259d7125b53dcd760e5bc2a549d925806c5f47f83896d
font_01_sfnt_off00005817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5817 18292 bytes
SHA-256: 2f8f6932c6a5471fcd86ac874366aa199bea0908b5b9fba5acbbd4822a363b64

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