Malicious PDF — malware analysis report

Static analysis result for SHA-256 64670772a508764e…

MALICIOUS

PDF

39.6 KB Created: 2021-05-22 05:07:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4c96078a25a3472091c67875b73a9cbe SHA-1: a579da5e11f6230137b3be803de21460a07fe0a1 SHA-256: 64670772a508764ef308cea265248357c1bc3c086593b0e490ca7025729f81c6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free game hacks and currency. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8068

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-robux-site-game-hack In PDF document text
    • http://poltekkeskhjogja.ac.id/images/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/get-robux-com_GM431946152.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E1 26204 bytes
SHA-256: 945713c766b13bad03e2eddad80a9973ef224776d9e83a20fd594e0ebc9a3acf
font_01_sfnt_off00006f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F50 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000795f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x795F 18236 bytes
SHA-256: d17cd47be652198dd65b1182653c5b68eec39c9a25c2fe205f68dda680ae7be3

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