Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f7008bfe92e46a…

MALICIOUS

PDF

36.9 KB Created: 2021-05-13 22:33:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1ee54827b0d8955c127aa025d654053e SHA-1: 36d0ffcc5f81f68d33a010a3d63ed169d01b11db SHA-256: 49f7008bfe92e46a9741d61a0cbbba46d3a503e6ef2c53dc39fb2e1381d28460
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a malicious redirector link, specifically disguised as a 'free generator / game hack'. The embedded URL, https://netcdn.xyz/app/479516143/minecraft-windows-10-code-free-game-hack, is known to be associated with malicious activity. The document body also contains similar links and a call-to-action phrase, reinforcing the lure to click the malicious link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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-windows-10-code-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
stream_003_off0000364e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x364E 24968 bytes
SHA-256: cdf05db92404e30ff90d8c33f92db7833135a7633935579b515eeb99ef7b4b5d
font_01_sfnt_off00006e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2A 18524 bytes
SHA-256: 5b7120127fa4edfe27b05f386d671bb01f7656ae4c322eea86db10496a4e6823