Malicious PDF — malware analysis report

Static analysis result for SHA-256 17cfbb4c08e36f0a…

MALICIOUS

PDF

41.6 KB Created: 2021-05-17 20:40:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 58193876f08bd935685e9471e3a646da SHA-1: 5d36912f26fc1af0ab1be2e84071cb8be7fe4cbb SHA-256: 17cfbb4c08e36f0abc8d7b54e4228a6a06307332c9b18236ac335d1e0ac7e14f
102 Risk Score

Malware Insights

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

The PDF document contains a large number of SEO-optimized links, many of which point to other PDF files related to game hacks and cheats. This indicates a link farm designed to attract users searching for such content. The presence of a visual download button lure further supports the malicious intent of directing users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/toolbox-for-minecraft-pe-game-hack PDF link annotation
    • http://sbm-nn.ru/images/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-without-downloading-any-apps_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_off00004708.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4708 24896 bytes
SHA-256: 987ffd3d8908f92bc577000fa3adebdc6b8590ffbf94313935d67cfca9cbd6cb
font_01_sfnt_off00008035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8035 18308 bytes
SHA-256: cad0c1d0267ccf17e6d6e466e5a8f19958f4fbf249f5d0def9b4b0a3839f8161

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