Malicious PDF — malware analysis report

Static analysis result for SHA-256 000bc1ad2f9a1dc6…

MALICIOUS

PDF

35.4 KB Created: 2021-05-15 10:41:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1f907c7f47e445867da4172183ab0fc5 SHA-1: 0a548729a170f1c993c09d90b1d880c2e382dc51 SHA-256: 000bc1ad2f9a1dc62d2776e30deecf25789686e52030eb270aee2cdfaf03bdae
130 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'free generator / game hack'. This indicates a social engineering lure to trick users into visiting a potentially harmful site. While no scripts were directly extracted, the nature of the redirect and the lure suggests an attempt to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

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-game-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003227.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3227 24152 bytes
SHA-256: 28ba484acbf285584868dc819d77aeb5b49dbb5b0295ab1f8c29fcb281c4f64a
font_01_sfnt_off0000698b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x698B 18148 bytes
SHA-256: 05f474a5dd778b1a8f82bb3f3194e0f6909204339d3dcef5442e6da61b36e890

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