Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c6ea6138529f0a…

MALICIOUS

PDF

36.1 KB Created: 2021-05-25 11:35:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: cd765918976cb642f639c8a4e0793875 SHA-1: 16b530a03d878c125706081729ebe22c26faf54e SHA-256: c1c6ea6138529f0a57450eeb243ce5477eb39627e7aa306f8a20bb8f6aab58d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body text and heuristics indicate a clear attempt to trick users into clicking these links, which likely serve as a gateway to malware downloads or phishing sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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 https://netcdn.xyz/app/479516143/free-minecraft-accounts-2021-game-hack In PDF document text
    • https://xn--80adfcepoood1a3b.xn--p1ai/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://xn--80adfcepoood1a3b.xn--p1ai/images/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • https://xn--80adfcepoood1a3b.xn--p1ai/images/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • https://xn--80adfcepoood1a3b.xn--p1ai/images/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://xn--80adfcepoood1a3b.xn--p1ai/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35AA 24116 bytes
SHA-256: 4abc163fcbee451bba3907ed0d1a67f6d3c7a42963c5e344eafff0d7eec0bfec
font_01_sfnt_off00006bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF5 18252 bytes
SHA-256: a7a52ec6c2bb565f332a4905da6a686ee34bc05df98df468ad89fd298f001152

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