Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2035d27c9e6b3ef…

MALICIOUS

PDF

38.0 KB Created: 2021-05-21 18:38:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 988d3ca49f7b9ff6b60f30a836a4161c SHA-1: e40b32a2bca2d3fe7d95215ebdddb821dad0fde3 SHA-256: c2035d27c9e6b3efe51e6a07170ed85c7ef38b53ea4f62c59f426239cc9fd1d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering 'free generators' or 'game hacks', which are common lures for malicious downloads. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious infrastructure, likely to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/406889139/free-coin-master-spin-app-game-hack In PDF document text
    • http://ivanitskyvs.ru/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-free-spins-a2z-help_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_off00003363.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3363 29464 bytes
SHA-256: 96982ad09bcfd2db10e2f3c2cf0a94cd07ccfb1ae0b6f430c8ab2f7995e6f0c6
font_01_sfnt_off000074c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C4 17884 bytes
SHA-256: 6a5fc0e5ee3990f98fff047e5d02c1443490e61ce795861dff478bab25fb071a

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