Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d72d66339a49102…

MALICIOUS

PDF

36.4 KB Created: 2021-05-23 23:08:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: be09b822d5d312cfaeef10e41820247b SHA-1: 77e6ac4a3ef74c97dd4082a4bd2888cea4d1d425 SHA-256: 1d72d66339a49102a9eb29aa5bb25db4dabc97779bc296a36dea1c4c9cc2632b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, masquerading as game hacks or free item generators. The document body and heuristics indicate a lure designed to trick users into clicking these links, which likely lead to further malicious content or downloads. No scripts were extracted, but the embedded URLs are highly suspicious and indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-java-edition-free-trial-game-hack In PDF document text
    • http://bufbd.org/images/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://bufbd.org/images/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://bufbd.org/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://bufbd.org/images/how-to-hack-a-minecraft-server_GM479516143.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_off000032b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32B6 25704 bytes
SHA-256: bd7787dd5754adc99b5d84fb71feb36269ff7796dd4a3195a59cad96da5349f5
font_01_sfnt_off00006d3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3C 18240 bytes
SHA-256: 1be29b22a500e2a60a7236cc7f3818504a778037c129f908a3826a58d12b939a

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