Malicious PDF — malware analysis report

Static analysis result for SHA-256 84cc90ee58c2ec22…

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 05:52:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a15f342df760febffd35e7c40058fe92 SHA-1: 6305c013a326862a497a4589c284ea036212c082 SHA-256: 84cc90ee58c2ec22fccbaaf144c0ec1acbb33a335117ed5ad70c8ae4a3ca25f4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links disguised as free game resources, such as 'Coin Master Free Spins' and 'Robux hacks'. These links redirect to malicious infrastructure, including the primary URL https://netcdn.online/app/406889139/coin-master-free-spins-link-no-verification-2021-game-hack. The document's structure and embedded URLs strongly suggest a phishing or scam attempt designed to lure users to potentially malicious websites. No scripts were extracted, but the PDF's nature points to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/coin-master-free-spins-link-no-verification-2021-game-hack In PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/simplysarc_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-app_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_004_off0000526d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x526D 24552 bytes
SHA-256: c8df8c57df431895f147c6cf47bd6adf4880d70bde8e7c38f73a298413e36b4b
font_01_sfnt_off0000896c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x896C 2928 bytes
SHA-256: 9f9429556154f58f51965d4607d75d12cc88cffeb51594c11f518038b5c3e096
font_02_sfnt_off00009389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9389 18592 bytes
SHA-256: f74899e085c91cd53f5ca09b8a5278408f496fc0c0b246b6d10c1aa0f6296d24

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