Malicious PDF — malware analysis report

Static analysis result for SHA-256 095c4f87d0c76afb…

MALICIOUS

PDF

39.0 KB Created: 2021-05-22 17:08:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6c480825b781a669177b5328872ad04f SHA-1: 6b646cd0eedd13050b93746f301280740c526092 SHA-256: 095c4f87d0c76afbbc41e6c79d3009ad0eb57b16c6ea82bdc1b2ef6528d12a78
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, disguised as a 'free generator' or 'game hack' lure. The document body and embedded links reinforce this theme, aiming to trick users into clicking through to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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-link-for-coin-master-game-game-hack In PDF document text
    • http://www.studiomilone.net/images/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.studiomilone.net/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.studiomilone.net/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.studiomilone.net/images/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.studiomilone.net/images/roblox-hack-client_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003346.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3346 25692 bytes
SHA-256: f3729feed663fbbb2594cd1215726f7fdcc92a4d0f8225ebdc780368f32db911
font_01_sfnt_off00006d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D56 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7708 18316 bytes
SHA-256: 4ad106dc66915d7a7c54c506e35e2e74cb7406920644c521a55874c4c44ea7c2

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