Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccbed310da985e60…

MALICIOUS

PDF

30.9 KB Created: 2021-07-19 09:00:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3a9b17945738bcc4af04c80a7c8b91ba SHA-1: bb419d663839a116424a7cd766659f472d323dbf SHA-256: ccbed310da985e6017ef70e3d65e9d48e65d2988926b176bdc01e9cccb13259e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'free Minecraft Premium Account' or 'game hack'. The document body reinforces this lure with similar text and a call-to-action button. The primary malicious URL identified is http://netcdn.tw/app/479516143/free-minecraft-premium-account-game-hack, which is part of a redirect chain leading to further potentially malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9147

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/free-minecraft-premium-account-game-hack In PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-free-robux-codes_GM431946152.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_off00002628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2628 22220 bytes
SHA-256: ed35f132387fcaf9ac9fc2cbdf3a347c11e6401a2d2f9480246e7e4cf70b9193
font_01_sfnt_off00005777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5777 18264 bytes
SHA-256: d2b91c2a6de84c5c57e6f7a8c0463896f89b33dea675ffd93dbde2c8d35c79e1

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