Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c2be221eb6a8c1c…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 20:12:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 961ef8093ddcc86befe4a1ec11bebe75 SHA-1: e77db72bbe635a5627890692e8778cde189303b3 SHA-256: 5c2be221eb6a8c1c99f3ead95c22178354420943f8f8076e613ed0aaff1aadad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The document body and heuristics indicate a lure to download or access potentially unwanted or malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious redirection workflow, likely intended to deliver a second-stage payload.

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/479516143/free-minecraft-mods-for-ps4-game-hack In PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/minecraft-menu_GM479516143.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://beershebaschool.edu.np/ckfinder/userfiles/files/coinmaster-twitter_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_off00004a0a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A0A 25432 bytes
SHA-256: e0611c448744324481fb5097f8c6aa612e73cfa94dc4ebcc1a39fcf5009fc6f0
font_01_sfnt_off00008354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8354 18100 bytes
SHA-256: afa4c211481c2918fc981f85699f534e91f71a3c97d40d186225a72223318956

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