Malicious PDF — malware analysis report

Static analysis result for SHA-256 e180cda9411d2f1f…

MALICIOUS

PDF

36.7 KB Created: 2021-05-21 16:39:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 91d8a7380071ececb150a2448357e071 SHA-1: 583a50e3d3a152ae0e1256553ca9d7a7f2d462db SHA-256: e180cda9411d2f1f0e5d455225593b5cfce0b524a433fed1e3b38e93db2e95ea
160 Risk Score

Malware Insights

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

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games like Roblox. The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the presence of malicious redirector links and the lure suggest a common phishing or malware distribution tactic.

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/play-roblox-free-online-game-hack In PDF document text
    • http://kukuck.de/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/roblox-points_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/watch-tiktok-for-free_GM835599320.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
font_00_sfnt_off0000344a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x344A 25360 bytes
SHA-256: 93e5f50fc34332a14281f6fb8902eed692561702fe8c9de911a3896dfc60cee1
font_01_sfnt_off00006d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5A 18628 bytes
SHA-256: 0face4c994977258c5b75d4e8d8705768a4ec09c316ae5d82e3d2938a44d0e6e

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