Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ec8d43f63b3db57…

MALICIOUS

PDF

53.7 KB Created: 2021-05-12 02:58:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6e8a458ce371d89537b69ccf4a42e927 SHA-1: d22dfa6ba46df2bf96cb5c22e3a6331ba9bd49f1 SHA-256: 2ec8d43f63b3db5779337ba411bd0bdaa517b9dd50c255141d230ab83b8850ad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, specifically advertising 'free generators' or 'game hacks' for popular games like Roblox. The ML classifier also flagged this PDF as malicious. The embedded URLs suggest a phishing or scam attempt to lure users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9486

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/431946152/free-roblox-passwords-game-hack In PDF document text
    • http://pescatun.es/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://pescatun.es/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-free-spins-link-without-human-verification_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004986.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4986 27016 bytes
SHA-256: e6b917b850e0eeee899e221dad821a0a1227571ff764511917b0f0d7405ab661
font_01_sfnt_off000086e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E3 12864 bytes
SHA-256: 09540bea87edb8bad60a0e4183bb79448b704e38d34f641cb41a820a59228844
font_02_sfnt_off0000aef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEF8 18668 bytes
SHA-256: 2fa2c5403ec1c86ab3807ffc76d8ff15a2d608ae4c9a7b06441cca7eaabeec69

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