Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc115b7c88064c1…

MALICIOUS

PDF

36.6 KB Created: 2021-05-24 06:27:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0117419a68820f2d160d9779a16f3ae9 SHA-1: 99d72efe80f8769b49799562e04cef916fc7e639 SHA-256: 1fc115b7c88064c17c97d766948b07b4215536efe2ba2875fb50f9412b20348d
160 Risk Score

Malware Insights

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

The PDF contains multiple links to external websites, including one identified as a malicious redirector, disguised as a 'free generator' for a popular game. The document body explicitly mentions 'Daily Free Spins Coin Master' and includes a 'CLICK HERE TO ACCESS COIN MASTER GENERATOR' call to action, indicating a social engineering lure. While no scripts were directly extracted, the presence of malicious links and the lure suggest an attempt to redirect the user to a site that may host further malicious content or exploit vulnerabilities.

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/406889139/daily-free-spins-coin-master-game-hack In PDF document text
    • https://ambarevleri.com/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/minecraft-116-free_GM479516143.pdfIn PDF document text
    • https://ambarevleri.com/images/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • https://ambarevleri.com/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/coin-master-free-coins-2021_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_off000034a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34A4 24812 bytes
SHA-256: c457a3c80d55a1ef722b86aa0771b83a82004c6aa622a2caebbbd25c901be458
font_01_sfnt_off00006dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBD 18308 bytes
SHA-256: 814bd0a2b88bdef89f3245e401f7fc464bd7314e61fe604409dcfddce4500050

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