Malicious PDF — malware analysis report

Static analysis result for SHA-256 8290efa4459854b7…

MALICIOUS

PDF

37.3 KB Created: 2021-05-22 15:20:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9732f65b47286647c79abfa3e69878ef SHA-1: dea5b7c332ff638818e96cac3ec56059a3212dd2 SHA-256: 8290efa4459854b71dd6119494f0927f52f46fd16d0fac77c2b6b882d489944e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering 'free Robux' or 'game hacks', which are common lures for malicious downloads. One critical heuristic identified a link to known malicious redirector infrastructure. The document body also contains a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', further reinforcing the phishing attempt.

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/431946152/free-robux-no-scam-game-hack In PDF document text
    • http://ipdrs.org/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/free-daily-spins-coin-master-2021_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_off00003233.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3233 27096 bytes
SHA-256: f024a1a469f9785f5ab947afde2eb212b094f5810dc33ddc42a21d8d5bc5f049
font_01_sfnt_off00006fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD0 18500 bytes
SHA-256: b3a5a2e86a30a2234a3ee6d3c2f7de48a52411aef28342c5883490dd6d64f819

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