Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff404a7ef6d51f3…

MALICIOUS

PDF

35.9 KB Created: 2021-05-23 01:13:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 063145c7671f684eb9f85e725a903da7 SHA-1: 215581a0b59289059403a20fc6ec6341b7a6ca43 SHA-256: 3ff404a7ef6d51f3b6bde77d8481c631a504544f3a9c7701ca75c2ab0f998609
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector, specifically advertising 'Free Robux' and 'game hacks' to entice users. The document body and embedded URLs reinforce this lure, suggesting the primary goal is to redirect users to potentially malicious websites for further exploitation or phishing. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/431946152/free-robux-please-game-hack In PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/pubg-uc-zing_GM1330123889.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000335a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x335A 24360 bytes
SHA-256: c40ac7b9f594c74bd9ff10d3548bbd9188ed86945c24d85f971d662ba807d7ae
font_01_sfnt_off00006a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A72 18472 bytes
SHA-256: a4143b220e35e332e52efa777ecf598d1a164c1d6c5ab1887881bf2674d2e637

Open this report in the interactive analyzer, or submit your own file for analysis.