Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d60f843b035d0d7…

MALICIOUS

PDF

41.0 KB Created: 2021-05-14 08:06:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1dff785f2404c8c082186802df998279 SHA-1: d24842cd2ad9a154ee1a6bbc17f05ee0953c163a SHA-256: 8d60f843b035d0d78c47cc3b26884126999d5a9bd6bb1db636455bfaf49195e9
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic indicating it links to a malicious redirector disguised as a 'free generator' or 'game hack'. The document body reinforces this lure with phrases like 'How To Get Free Robux 2021 Easy' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR'. The presence of embedded URLs and the nature of the lure suggest an attempt to trick the user into downloading a malicious payload, likely via a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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/how-to-get-free-robux-2021-easy-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_off000031f6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F6 28160 bytes
SHA-256: b6eea3fbdb6af17f1eb9b1e4f2b53e77a486ef5d52064c4961f333a228c7752b
font_01_sfnt_off00007265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7265 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00007c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C26 19092 bytes
SHA-256: cc4041fc50bd2ea9a1268967e32916156e3a634973a216864dd7f220ceb04504

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