Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc422b7a19a44450…

MALICIOUS

PDF

39.5 KB Created: 2021-06-08 18:15:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bf8c484e082fa7bf153f96b617628d43 SHA-1: e567ace946e3a585fcb536e239c9e293b4dcbd4b SHA-256: cc422b7a19a44450d6a77e37a69655e6cd04584911232ef4295b8f85ef3430b0
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that are identified as malicious redirectors, specifically promoting a "free generator / game hack" lure. The document body text and heuristics confirm the presence of these deceptive links, aiming to trick users into visiting potentially harmful websites. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0487

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.tw/app/431946152/free-robux-app-without-human-verification-game-hack In PDF document text
    • http://lib.perpuspersada.my.id/repository/how-to-hack-roblox-jailbreak-on-ipad_GM431946152.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_off00003ce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CE1 25004 bytes
SHA-256: a45f2c1c51df0679ad4e0fc043c9e54f817f145c74cf66172bd785a41556b442
font_01_sfnt_off000075ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AC 19400 bytes
SHA-256: bde813b0d2dad26393b75737f8c6bc5783b91695a1c47d1c68ccf5f833e2ed17

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