Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d7e56c81ee9880d…

MALICIOUS

PDF

50.1 KB Created: 2021-05-13 22:16:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2f8672da697d39e6c8b7f781512326b4 SHA-1: 1ef22240206abce284cf72e448571c761dd8e23d SHA-256: 5d7e56c81ee9880dafdfcba12277c9dfe7782245cf94b580d9a3a800e9cc9176
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://netcdn.xyz/app/406889139/kachifpro-game-hack'. This URL is presented as a lure for game hacks, aligning with the 'SE_DOWNLOAD_BUTTON' heuristic suggesting a call-to-action. The document's structure and embedded URLs indicate a phishing or scam attempt designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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/kachifpro-game-hack In PDF document text
    • http://zagi.hr/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://zagi.hr/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
    • https://www.zagi.hr/files/coin-game_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://zagi.hr/files/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-spins-coin-master-without-completing-offers_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b03.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B03 26316 bytes
SHA-256: 1cc099d6d6b5eab4d7b336f3c387f7a6f11c652a4eff6a59f59d7948d6cca4a6
font_01_sfnt_off00008608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8608 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off00009820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9820 17784 bytes
SHA-256: f5f16e9fe06415f99f9f196ec79e922628d3dac9c37f6a7894d79eeb781dffd0
font_03_sfnt_off0000b87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB87B 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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