Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d3630e44626e29…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 06:56:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: fe3ae8eb5d31b2094907063cb63a6bc8 SHA-1: 4d2ebbea174acbf956955d61fe259b93eb93507f SHA-256: 41d3630e44626e29118e512962dbae921141f1909cb8da847b81ef5d240bd31c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising 'game hacks' and 'free generators'. The primary malicious URL identified is https://netcdn.online/app/406889139/games-like-coin-master-game-hack. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering lure designed to redirect users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/games-like-coin-master-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/tiktok-free-download-video_GM835599320.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/getrobux-now_GM431946152.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_004_off000050ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50AB 24324 bytes
SHA-256: 10c8b6f18ac28a43fbf8ffdcc66a8c1d5700ea0c5eeeeebb4c82628fb88a4959
font_01_sfnt_off00008875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8875 17976 bytes
SHA-256: 2545fd845a8b9b89b0f46202648a02af0cc4ccf8f9f45e2a3997a5201f678305

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