Malicious PDF — malware analysis report

Static analysis result for SHA-256 8df465c95bb3964c…

MALICIOUS

PDF

36.7 KB Created: 2021-05-23 18:11:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 24b74186a2de0eb20e7ec988385fbd79 SHA-1: 5017528b09f78bfce8396babba5f7d196b848bbc SHA-256: 8df465c95bb3964c8c6d340c0dacf64c2af39cfaa913987fbb7acb1cf00dd0aa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external resources, including a primary link to 'netcdn.xyz' which is flagged as a malicious redirector. The document body and heuristics suggest a lure for 'game hacks' or 'generators', indicating a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect the user to a malicious site, likely for initial access via a phishing attachment.

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/479516143/minecraft-bedrock-edition-download-pc-free-game-hack In PDF document text
    • http://uo-nn.ru/images/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • http://uo-nn.ru/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://uo-nn.ru/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://uo-nn.ru/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://uo-nn.ru/images/free-spins-for-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_off00003438.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3438 25060 bytes
SHA-256: 981c9cc01eb8ca3a21ea3e86a116357182ad7cc0e21c82f3d1e90cd8f195f5b8
font_01_sfnt_off00006cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD2 18828 bytes
SHA-256: 57b97413d46eb8dd02e8163e11e04ebb18f1b46f22b88b993c8d7eb158a8ca98

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