Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5e4ad183d210467…

MALICIOUS

PDF

41.9 KB Created: 2021-05-16 20:41:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1f157232ee543ee9cc5df236147832e1 SHA-1: d0253916efdb7d56f9a03b6c74a5847989823907 SHA-256: c5e4ad183d2104670bf2bf3cd79ace9f519101a4605c481619af55420873ea04
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack lure, linking to a known malicious redirector. The document body and embedded artifacts also contain text and links related to obtaining free items, reinforcing the lure. The embedded URL is the primary indicator of compromise, likely leading to a further stage of infection or phishing.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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/how-to-get-free-shirts-on-roblox-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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_off0000346a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x346A 29612 bytes
SHA-256: 366b39f6cc867f997cba713465d17f7b87d61c4d715f682234b320b38a274b31
font_01_sfnt_off00007801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7801 2888 bytes
SHA-256: a9b91c9aa70ac83802997a9ae828836277081abc345e8df664e3353ac2c39421
font_02_sfnt_off000081ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81FF 18500 bytes
SHA-256: 0913aca000174c5e77b5d0e65f3ee2ebb36c614e623a410724f75da42fa667ca

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