Malicious PDF — malware analysis report

Static analysis result for SHA-256 74fb52e7748e8ab0…

MALICIOUS

PDF

31.5 KB Created: 2021-07-18 22:44:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 437a6438e6e4ffcfa7edb67c9f585995 SHA-1: 7647d9b5962085782ff8437b19c6314b2ed2d648 SHA-256: 74fb52e7748e8ab0361ebbe02c269da60137c019192ba66ecb7320102af605e6
130 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'free TikTok Likes game hack'. The document body also contains a call-to-action button lure. These elements strongly suggest a phishing or scam attempt designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0580

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 http://netcdn.tw/app/835599320/free-tiktok-likes-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_off000028c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28C5 22852 bytes
SHA-256: 60d42e113d542b71de510af53c11680e6231910118197e1a7429c3e4c4837ec8
font_01_sfnt_off00005c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C33 17456 bytes
SHA-256: 90aab8e20699190043af8c1921cf798ffa728f6e874bf4804f87169ad62e4652