Malicious PDF — malware analysis report

Static analysis result for SHA-256 6822a5a5c4a8d367…

MALICIOUS

PDF

36.4 KB Created: 2021-05-10 23:40:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 321326602e39f46c7dad94f2abb7b265 SHA-1: a5a9a33b2178d0f58d30201c284cf6bd431a9056 SHA-256: 6822a5a5c4a8d36757f0aea521fe5a2be5d503dc88adbf3c95ab32c1804d405a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to malicious infrastructure, specifically advertising a 'free generator / game hack'. The heuristic firings indicate that the document uses a lure to trick users into clicking these links. The primary malicious URL identified is https://netcdn.xyz/app/479516143/minecraft-mods-download-free-game-hack, which is associated with known malicious redirectors.

Machine Learning

  • Nyx PDF Classifier clean score 0.0292

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/minecraft-mods-download-free-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_off00003414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3414 26484 bytes
SHA-256: 530a22d2787a67a75db184761c3975336290100f1d292459608895f410a72fbb
font_01_sfnt_off00006d08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D08 18292 bytes
SHA-256: cdbcc94192cea0c1a32d76b4e8648406db092070658ebd9590606dd52a123660