Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb30d45d8df68c85…

MALICIOUS

PDF

39.7 KB Created: 2021-05-10 21:33:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f07639c450480e033c0dabe151a36fb8 SHA-1: c94395bc390bdc8390d16e6e34c87fa65e1aa6b2 SHA-256: bb30d45d8df68c85c8a954c5b32c8d259a27890d2ccba385dc33a4ed728b0442
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links pointing to malicious redirector infrastructure, specifically designed to lure users into clicking for 'free generators' or 'game hacks'. The document body and heuristics confirm the presence of these deceptive links, indicating a phishing or scam attempt. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

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/406889139/free-spin-coin-master-link-download-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000032ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32EE 25756 bytes
SHA-256: 872849f069f3ba7978b85a3249a3985f7f1884b9cafa0734b39a2e609282a537
font_01_sfnt_off00006e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E18 18636 bytes
SHA-256: 136b79965a5248ac6e7935dc786215b4277752963c3c0798ae07969220183c9d
font_02_sfnt_off00009129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9129 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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