Malicious PDF — malware analysis report

Static analysis result for SHA-256 d793acafff4a94b9…

MALICIOUS

PDF

36.0 KB Created: 2021-05-20 18:07:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bfbb6c0a36faa15421a4d47de45c49b3 SHA-1: 7dbe6ac3b53bfe8b9053513cc14e6eab192ac64b SHA-256: d793acafff4a94b9ce09aaf778585207a9dd446b73cddd5ab5804bed4663d55e
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically advertising 'free generators' or 'game hacks'. The ML classifier also flagged this PDF as malicious. The presence of a visual download button and the lure text suggest a phishing or malware distribution attempt.

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-roblox-gfx-game-hack In PDF document text
    • http://mypizzaoven.com/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/hack-a-game_GM431946152.pdfIn PDF document text
    • http://mypizzaoven.com/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://mypizzaoven.com/images/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://mypizzaoven.com/images/coin-master-100-free-spins-link_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
font_00_sfnt_off00003399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3399 24764 bytes
SHA-256: ce8d38fd5c3fd4304c714080e489118fe16bd82702061ea46219850488cde425
font_01_sfnt_off00006c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6C 17948 bytes
SHA-256: edf37cea4d9572b79aff99b5f3e3e51e81091579a2693570fa47b81a4934fab1

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