Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a6d13c06d19a4b…

MALICIOUS

PDF

33.8 KB Created: 2021-05-19 22:44:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cec0ccd30e1ba485fa981a4a93442b95 SHA-1: 206fb4ee91a6461a1eb875a5edbcf2cbf6a3bc6f SHA-256: d7a6d13c06d19a4bcee8ef143b2f89c4cd86f5780444486dca2b20a54cc31dc2
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a game hack generator, which is a common lure for phishing or malware distribution. The embedded URL points to a suspicious domain known for hosting such lures. While no scripts were directly extracted, the PDF structure and heuristics indicate an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9085

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector high 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/coin-master-free-stuff-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000034ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34AD 23916 bytes
SHA-256: e2f5594b6c8692fe4ffaad17c6d8a9ab08c2b8c180c3bf87eea7fc30661f2d48
font_01_sfnt_off00006b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3C 17848 bytes
SHA-256: 49970788d519349fbd5ba6badf06c324563f4794a9a5c1e41d0627a31815ac32

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