Malicious PDF — malware analysis report

Static analysis result for SHA-256 49c43fb37dc0e821…

MALICIOUS

PDF

22.7 KB Created: 2021-05-17 07:00:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 90e12bdcd78265bbdf14fb68be1e274f SHA-1: 2ac3cf6ddf88a23b18faab16e6c616fe4aaa00ce SHA-256: 49c43fb37dc0e8216d4cff5de3d1dab29897a4147f0a1f801c127e2bf553a87d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to a URL known for malicious redirector infrastructure. The document body also contains the same URL and a call-to-action phrase, reinforcing the phishing attempt. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to a further stage of infection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0218

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/how-to-get-free-robux-easy-2021-game-hack In 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_off00000d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B 19420 bytes
SHA-256: ba8c9b828a3a65c6f85eabe5d977dfce77c17d7ce41ac84e2c34c7e296ba8e63
font_01_sfnt_off000035db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35DB 18516 bytes
SHA-256: 97bcc81723ef5b32c87672d667c054c4a39eb98506043442d8d2bbc8b9e9c6f7

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