Malicious PDF — malware analysis report

Static analysis result for SHA-256 6218a22f771abdbd…

MALICIOUS

PDF

38.3 KB Created: 2021-05-22 10:41:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0fe0184ca716051fe574344d11d22d76 SHA-1: a2a0fde822c525b14d38160acc8689cae2a8a309 SHA-256: 6218a22f771abdbd7ace1c415625c9fadd2e5c0ed4f6c689e0f20b616bb98101
168 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 advertising free TikTok accounts and game hacks. The ML classifier also flagged this PDF as malicious. The document body and embedded links suggest a phishing or scam attempt designed to lure users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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-accounts-with-followers-game-hack In PDF document text
    • https://www.solucionesdigit.com/images/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/games-for-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000320d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x320D 24552 bytes
SHA-256: cbd9763b5389a41cfe0065b4e29eae35daff2a10267b25642302306585663daa
font_01_sfnt_off00006a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6F 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00007454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7454 18200 bytes
SHA-256: 00ff3188f7c2cc6f3bb1e48311a72fd536e799d3f1f3caf1b59355958851fd7e