Malicious PDF — malware analysis report

Static analysis result for SHA-256 624609db3b02ad9c…

MALICIOUS

PDF

41.6 KB Created: 2021-05-11 03:07:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2c8b809619b6f5791c561f3631bb6a86 SHA-1: 28826ca816b1577f11f47fe1c5e6a192b96f62a4 SHA-256: 624609db3b02ad9c7093f63074027d1629467ded0b2033804a05cea8a13c408d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, disguised as 'free generators' or 'game hacks'. The ML classifier also flagged this PDF as malicious with high confidence. The document body and embedded links suggest a phishing or scam attempt to lure users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coin-master-hack-unlimited-spins-apk-download-game-hack In PDF document text
    • http://eooe.gr/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/install-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-hack-apk-online_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_003_off000046bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46BD 24428 bytes
SHA-256: c6e15072b9c2d69d5c1f0c324088281ea56b4bc10c7323c0d6760702e5dd37e8
font_01_sfnt_off00007e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6C 18916 bytes
SHA-256: 36b5946d0fa01df03061b9872aea65f63cba93bccd0378a8f0b0329212d0019c

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