Malicious PDF — malware analysis report

Static analysis result for SHA-256 762d3656a55f1ab5…

MALICIOUS

PDF

36.6 KB Created: 2021-05-12 03:11:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7b5e5a5e91ebe830e56b8af83a38d43b SHA-1: f1ada0b4823c23fe4a27d6576e6c5164a1ba3b99 SHA-256: 762d3656a55f1ab5389ec00a55d62fc6367dfbbaf8b05f3446713ca8dd358523
130 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it's a lure for a 'game hack' and links to known malicious redirector infrastructure. The primary malicious URL identified is https://netcdn.xyz/app/479516143/how-to-hack-a-minecraft-account-game-hack. While no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest it's designed to exploit user interest and potentially lead to further malicious activity, likely involving client-side execution.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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/how-to-hack-a-minecraft-account-game-hack In 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_off00003647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3647 25740 bytes
SHA-256: d43ea47d9ce6e59ddb949867e2720d55e46ebddd03b34327f233738b85618365
font_01_sfnt_off00006e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1C 18184 bytes
SHA-256: 9b8f26e31d459421e9e5b83d6a53d579ef5ea49b0db69369fb37c1c5c6cb5db0

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