Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d43ce5718d6ed40…

MALICIOUS

PDF

43.7 KB Created: 2021-06-13 21:10:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e5c536204ad82b5dc16464d7b30da984 SHA-1: 205a8cc85be50b5eaf986947688f672c3d17330f SHA-256: 8d43ce5718d6ed405e0e919f50503d3b4586a4761f383e098c4ca36e2681081e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, many of which point to SEO-optimized PDF files related to game hacks and cheats. The document body also includes a direct link to a purported game hack download. This suggests a social engineering attack aimed at tricking users into downloading potentially malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 http://netcdn.co/app/479516143/minecraft-java-edition-free-download-game-hack PDF link annotation
    • http://library.stieyapan.ac.id/repository/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/tiktok-free-view-59_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-a-free-home-on-roblox-on-rocitixens_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/pokemon-go-free-latest-version_GM1094591345.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-arsenal-hack_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_003_off00004d7c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D7C 25824 bytes
SHA-256: ff29e99ace89f61f1432d34ef821b6adda23d05faf95dbca8a414d28afc892d6
font_01_sfnt_off00008795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8795 18572 bytes
SHA-256: be0be2e0bd1478f571662982334261f36152068b9a395b749ff064ff651796b1

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