Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd23c4a8b5a57bd…

MALICIOUS

PDF

41.1 KB Created: 2021-05-07 05:38:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3a0b0f87899c6e088a5f2fd29f87a47f SHA-1: 25aa7fc93b6d365cca8fa2e8494965dbda4bc8ef SHA-256: 1dd23c4a8b5a57bdb76903a70e4dc0eec340592672a9711666826864d2702026
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to known malicious infrastructure, masquerading as a 'free generator / game hack'. This lure is intended to trick users into visiting a potentially harmful site. The document's content and heuristics strongly suggest a phishing or redirection attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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-roblox-games-for-geust-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
font_00_sfnt_off00003640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3640 28008 bytes
SHA-256: 934aa14c1c6bec8ada08e718e81a94a2124eab616fbd810159212a079c7a625e
font_01_sfnt_off0000733a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x733A 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00007fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE2 18104 bytes
SHA-256: 2ec88f3822bc5e75cd7b39d1d2291926ea5a6b0e6c1c514953f98af4a78aefdc

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