Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a9db7b46d6ac26b…

MALICIOUS

PDF

47.8 KB Created: 2021-06-03 10:49:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ad51dc7ddcfe65efdb02d7888e4200f7 SHA-1: 4e0a4d8ba1bc68e119047521c76f197f52a08a66 SHA-256: 9a9db7b46d6ac26b5574411e5c25b8950ba141b724be9524c1bd67829a31f3d7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are disguised as SEO-friendly links to PDFs related to game hacks and free in-game currency. One prominent URL, https://netcdn.online/app/479516143/chisel-and-bits-mod-pe-game-hack, suggests a direct download for a game modification. The presence of a 'download button' heuristic further supports the lure of downloading content. While no scripts were explicitly extracted, the PDF structure and extensive link farm indicate a malicious intent to redirect users to potentially harmful resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/chisel-and-bits-mod-pe-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/wurst-download_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://sigmaclient.info#2In PDF document text
    • https://flux.today#3In 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_off000052ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52EC 26808 bytes
SHA-256: 3cb323f203d79ced2f5f49315e98736e05731991c58d2e46d73a2301ba376c6e
font_01_sfnt_off00008e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6B 2940 bytes
SHA-256: ae8acc7f13e86db3aed98d7dfb73e70e16f4dedb45e9f0467460b76f54e1a1bb
font_02_sfnt_off00009879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9879 18268 bytes
SHA-256: 21600419038eacf8d17a25e0de8b2d3f701338884b0b037dc932f5efdb40593c

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