Malicious PDF — malware analysis report

Static analysis result for SHA-256 1384ff5a3c9f172e…

MALICIOUS

PDF

36.6 KB Created: 2021-05-24 05:13:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 124e6f05c3d2d5df6e1d63ef156a43ac SHA-1: c4badfbe0239b8564804b63f27504a42924e730d SHA-256: 1384ff5a3c9f172e05bd7a650690b7c560d38ae481c9aa74d501583e053ef007
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting a 'game hack' or 'generator' lure. The document body and heuristics indicate a clear intent to trick the user into clicking these links, likely leading to further malicious content or downloads. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-get-minecraft-for-free-on-pc-game-hack In PDF document text
    • http://bressanassessoria.com.br/images/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/minecraft-pe-free_GM479516143.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003591.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3591 25552 bytes
SHA-256: 16d92ec3c96f906ff28e533c47c3998c59d006d49de05f6e1e8e5ffe809fded9
font_01_sfnt_off00006ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECD 18028 bytes
SHA-256: b9422edf84f92072c73e95211b34a92c0a0e69f845a714fee2d613fe1b4264b0

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