Malicious PDF — malware analysis report

Static analysis result for SHA-256 649378a6e5aae7dd…

MALICIOUS

PDF

36.7 KB Created: 2021-05-20 20:27:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 86552148ebf2180380b1f8bccf13c9ce SHA-1: d49567c82f790173b8911004dedc02aacefafeaa SHA-256: 649378a6e5aae7dd38a23a82447cb5717b45074b12a1ccbb3fe77620c35962d6
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks or generators. The document body explicitly contains a call to action to 'CLICK HERE TO ACCESS TIKTOK GENERATOR', further reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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 https://netcdn.xyz/app/835599320/freer-pro-tiktok-game-hack In PDF document text
    • http://gruporamos.do/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/coinmaster-fan-page_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
stream_002_off0000363b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x363B 26384 bytes
SHA-256: 8b7c96cf239d64f4ba7ae3cd5b6ad90667752766f9feb4805d88beb277f14e51
font_01_sfnt_off00007048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7048 17612 bytes
SHA-256: ce89ed17beb43e5874c760a665d90bca09271831bf209f2f19e5d757293baf95

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