Malicious PDF — malware analysis report

Static analysis result for SHA-256 506dc0228c5acd26…

MALICIOUS

PDF

36.9 KB Created: 2021-05-15 23:05:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 50f645847c4cb52efc1da049593552e3 SHA-1: cd0a7b941edb86c1c2cf6366279fbdc30a061a25 SHA-256: 506dc0228c5acd266074e1f6ff4381210af629507e2f9616b3ae67f0909e618e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a malicious website promising free Robux and game hacks. The document body and heuristics indicate a lure designed to entice users to click the provided URL, which is associated with known malicious redirector infrastructure. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0313

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/431946152/free-robux-websites-no-human-verification-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000032df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32DF 26028 bytes
SHA-256: 10cd2475b057093a9a5cecf9b374b2981291b20dce75093c0252ac6e4970512b
font_01_sfnt_off00006c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C80 19056 bytes
SHA-256: b278ed256549c6e4f6c448dba943d0e72c7f64ebe7340c12334ea4705f26c648

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