Malicious PDF — malware analysis report

Static analysis result for SHA-256 43457ee0c8893009…

MALICIOUS

PDF

27.5 KB Created: 2021-05-13 16:08:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e7755dd6cfd859ce0caf1fd5a6ee5b96 SHA-1: 6a68635c2a59b4c0c3efc04ad12cf40588e50f71 SHA-256: 43457ee0c88930093c8419edb0f848c83603c0fcb21814ba2c3945b670c0f861
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically a lure for game hacks. The document body text reinforces this by mentioning "free Robux" and "Roblox Generator", indicating a phishing or scam attempt. The presence of embedded URLs and the nature of the lure strongly suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0522

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/how-to-get-free-robux-on-chromebook-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_001_off00001538.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1538 23368 bytes
SHA-256: f7865eda35f5f06dc2d8c2f47b71998905cc9122ba0731fd2685109276fa0717
font_01_sfnt_off00004a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A4F 18272 bytes
SHA-256: 0e48a79a5db9f4e09df2d1c9c7973b5cbc35c61444083a2f0b207b68e0213471

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