Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0789fc735f054f…

MALICIOUS

PDF

38.8 KB Created: 2021-05-12 05:31:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: dd99a2f5b45cf587e457994f488bb550 SHA-1: ecaa2925b11decae014804df1a44f3c69641a23c SHA-256: ab0789fc735f054f8379d6f31a384f270436881a36e56c472e4c9fe3a0a0d455
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains text and embedded links promoting a 'Free Robux Generator' and a 'Download Now' button, which are common lures for phishing or scamming operations. The primary embedded URL, https://netcdn.xyz/app/431946152/free-robux-generator-com-roblox-hack-game-hack, is flagged as a malicious redirector, indicating it likely leads to further malicious content or exploits. Although no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest an attempt to exploit user interest in online game currency to drive traffic to malicious infrastructure.

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/431946152/free-robux-generator-com-roblox-hack-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
font_00_sfnt_off000035b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35B4 28032 bytes
SHA-256: f477da5fda6fff27a8a6c241926145d51f996cc02480819833cbe36a6dcd05c8
font_01_sfnt_off000074fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74FB 18852 bytes
SHA-256: 4f913a2277500713712aa6cd09c4e12b5f8093088fb24eab89a43b1b22929045

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