Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c4858718cfa8501…

MALICIOUS

PDF

39.4 KB Created: 2021-05-17 00:44:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 09d8bd791fa2d8c2d2f85b71de16c98a SHA-1: f3e1a9044f6657be5c3bd8daae2d55a103c35e9c SHA-256: 9c4858718cfa8501d11a96903bdace3e070ed77bad55e77e1d92b465f8277664
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it's a lure for a game hack or generator, directing users to a known malicious redirector. The embedded URL and document body text reinforce this phishing attempt. While no scripts were extracted, the PDF structure itself facilitates the redirection, likely leading to a malicious payload download or further phishing.

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/479516143/how-to-download-minecraft-for-free-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_off00003623.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3623 24932 bytes
SHA-256: 298a1264b4e212e9954eeee89336b8532cd44caf8fbd41d3e6b23b3e2b4f6f23
font_01_sfnt_off00006e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3A 2944 bytes
SHA-256: e8dca988325d5b5adea380508eed68725fcb814536e93cd420f224b7166adc23
font_02_sfnt_off00007865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7865 18292 bytes
SHA-256: 99621570461cd7d06d3aeee2d5a7201c5e27378a0102ff29a57c60fd25da4758

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