Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e31e02c21d00954…

MALICIOUS

PDF

30.1 KB Created: 2021-07-19 07:59:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3ecfddfc04095fc654b627d65c2aa66d SHA-1: 6bdf3f90adb3cc28e1c96828de477d0ad9a5e8ac SHA-256: 7e31e02c21d00954d48841f766fce9f625230ee9e2ba918d010d2e3fad57c07e
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting a 'free generator / game hack'. The ML classifier also flagged this PDF as malicious. The embedded URLs and the heuristic firings strongly suggest a phishing or scam attempt designed to lure users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9255

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/431946152/free-robux-please-game-hack In PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-tiktok-app_GM835599320.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn 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_off0000220f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x220F 22032 bytes
SHA-256: b204b5a45cdeeff372069dae6296e5a173db9b729398fccd6bcfd0a22e6bd592
font_01_sfnt_off000052f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52F1 18656 bytes
SHA-256: 052dafc98bc3e54e5c49a726842c9f5db487ecc3addea39036823a5a9a471daf

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