Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a46ede535aaf8e0…

MALICIOUS

PDF

38.6 KB Created: 2021-05-25 09:39:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3dea7e30c078211528b31465fc8cbd83 SHA-1: b782a5ac6c25569efeb91631f6dc5290292fef1c SHA-256: 5a46ede535aaf8e0b802765713bad24dd7f9a6ef1d8c2133fca7485d553fa308
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains a lure for free TikTok likes and game hacks, directing users to a known malicious redirector URL. This pattern is consistent with phishing or scam attempts designed to lead users to malicious sites. The presence of a download button lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0134

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/835599320/free-tiktok-likes-trial-game-hack In 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
stream_002_off00002b3b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B3B 26636 bytes
SHA-256: a40f5a354a23b3dd25fd059823d99cfa0d6c8d581b27b9b18ab5886008c4eed0
font_01_sfnt_off00006950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6950 4148 bytes
SHA-256: db7ec909c907b23088a98ecd4cd288b476f2f66785a6e3d81bc6469138abe306
font_02_sfnt_off00007725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7725 17756 bytes
SHA-256: 9d76c6faa2ac5c2cb25d5c28859cdf9fe3589154660ff5d1bcb1376c3aae0ade

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