Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea16a9f56f2187ba…

MALICIOUS

PDF

36.2 KB Created: 2021-05-23 05:08:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 70d15e7021654123b8947a399f6b4a2d SHA-1: d64ec3ea01a2cf3ebf8bc2195a18a6e9a32ebbac SHA-256: ea16a9f56f2187baec01609703ef588b25936cb4c9c6fdc34296e297a2801aaa
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and infrastructure, masquerading as a 'free generator / game hack' lure. The document body, though partially corrupted, contains phrases like 'Free Robux Redeem Codes' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or download further stages.

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-redeem-codes-game-hack In PDF document text
    • http://uo-nn.ru/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://uo-nn.ru/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uo-nn.ru/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://uo-nn.ru/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://uo-nn.ru/images/how-to-get-100-free-spins-on-coin-master_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_off00003119.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3119 25388 bytes
SHA-256: 5b75e5434920f19cafb5fd1c7906ac4fb059f88e4e06825b62b197ecd619624f
font_01_sfnt_off00006ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA1 18448 bytes
SHA-256: ac1fbd71dc65d7a5013a2beb110170fe519d7ae17df877d161357825f85fd2ae

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