Malicious PDF — malware analysis report

Static analysis result for SHA-256 32a241495e78b90c…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 15:10:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7232343d8fd382fa6e6d140ef83a5c2f SHA-1: 3d8eaddb63532b39de9b5abe41a0db5ee8a8e234 SHA-256: 32a241495e78b90cfdf0f3212966ab46df5a7daf09584365ecf2d50d9b533556
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a high-risk heuristic firing for a fake CAPTCHA lure, combined with a link to a 'free generator / game hack' redirector. The document body also contains text related to 'Roblox Free Download' and a call to action to access a generator, reinforcing the social engineering aspect. The embedded URL likely leads to a malicious site designed to trick users into downloading further malware or engaging in other malicious activities.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-free-download-game-hack PDF link annotation
    • 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_off00003353.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3353 28772 bytes
SHA-256: d07adc596ef39934d0faf2abcd94bb3f697988f36d944fc66526bce04b72d4d6
font_01_sfnt_off000074a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A0 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00007fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCA 18680 bytes
SHA-256: 4713be9169544f6656b4c8be21c2a58d7eafaa04b5602a230b8b1e84fc41e5af

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