Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c22e88752c05e05…

MALICIOUS

PDF

37.9 KB Created: 2021-05-23 00:49:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 24955589921c51d5abf8e140cee8fa78 SHA-1: e7d0981955bedeae69943a0ca9eb38f9c4378422 SHA-256: 3c22e88752c05e05d7def6adf502bc215e3a409e608160c0907b4808fd9e9045
200 Risk Score

Malware Insights

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

The PDF document contains multiple links impersonating Facebook and offering "Free Robux" or "Account Stealing Hacks", directing users to a known malicious redirector. The document body and heuristics indicate a credential phishing or scam lure, likely intended to lead to further exploitation or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9678

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/free-robux-giveaway-game-hack.
  • 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-giveaway-game-hack In PDF document text
    • http://scuttworksdesigns.us/images/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://scuttworksdesigns.us/images/2021-free-spins-coin-master_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C1 26968 bytes
SHA-256: 21a0ca3c19df67fa3c3c56a7c4b88bddfd1a619020d5b84271a6da141551c732
font_01_sfnt_off00006efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFB 19456 bytes
SHA-256: 2d1f7a8b5e25af4fce0186088c47f3fda2590e8e8df76d2c28a3417e341567fd

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