Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a708281de3b720f…

MALICIOUS

PDF

40.6 KB Created: 2021-05-18 02:16:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 044058d84635b5c09c223e66f14ab262 SHA-1: aca2ed30a92fb13feae0acd1c32fbe5654dbf2f6 SHA-256: 5a708281de3b720f1d5c14c0d458689dc8bd91678917d818dcd28502cb6079a1
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it links to a malicious redirector disguised as a game hack generator. The embedded URL, 'https://netcdn.xyz/app/431946152/easy-ways-to-get-free-robux-game-hack', is flagged as malicious. The document body and PDF facts further support a lure-based attack pattern, likely intended to lead users to a malicious 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/431946152/easy-ways-to-get-free-robux-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000033d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33D6 25564 bytes
SHA-256: 7472d2c80ac457f7b14d0a99a4155d6271f8ff0aeb0d63c0ae763b8efb0571d8
font_01_sfnt_off00006ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED3 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007be4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE4 18724 bytes
SHA-256: ff2b5f5648817baecf5754646eae61914eefadf3856a555e8e6cbc13d6b08405

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