Malicious PDF — malware analysis report

Static analysis result for SHA-256 10f446a62d9dff8e…

MALICIOUS

PDF

35.7 KB Created: 2021-05-21 00:46:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dfaef23ccee1b544adbf1ba9f7aedeaf SHA-1: 66804900ed182ebf955e723ed6af16b34ca94d15 SHA-256: 10f446a62d9dff8e3766525106fa6273dbab1712c29b8fe2817de762ce97f3c1
200 Risk Score

Malware Insights

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

The PDF contains multiple embedded links that redirect to malicious infrastructure, masquerading as game hacks or generators. The document body includes a call-to-action phrase and password protection instructions, suggesting an attempt to bypass security controls and trick the user into downloading a payload. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/431946152/roblox-free-draw-game-hack In PDF document text
    • https://www.sarsen.net/uploads/files/files/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/free-coin-master-app_GM406889139.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
font_00_sfnt_off0000332b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x332B 23968 bytes
SHA-256: 48d13a5cfefebac856b509c62343a64d545173e5ddcddb70087cbc3c07fd2583
font_01_sfnt_off00006982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6982 18508 bytes
SHA-256: d43aad8391cc92c6a460772e2941ce4b971725fdced8eeeb4fc6fe10188b1862

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