Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f3e67b8232135d1…

MALICIOUS

PDF

39.2 KB Created: 2021-05-10 17:31:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: af6e2178e86fa35852351335e808f4de SHA-1: 35ac6f54938ec120426304abe220d1e6ea50afe6 SHA-256: 7f3e67b8232135d111b15a38d8bcb28ccbe861959d4e93cb7d5f6e4d48c413a0
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically disguised as a lure for a "free generator / game hack". The document body contains text and a call-to-action phrase, 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The embedded URL points to known malicious infrastructure, indicating a likely phishing or scam attempt to redirect users to a compromised site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/is-java-minecraft-free-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000036f6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36F6 25084 bytes
SHA-256: cf40dc34116614c25e267c6b4a2ab6e71fcf7c2718584aa6796bc07ffb87d65b
font_01_sfnt_off00006fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA7 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00007948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7948 17848 bytes
SHA-256: 2812ffd3b6569d14fce824048316eedc6e3758fbb22d1025bbcec1b053185b7d

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