Malicious PDF — malware analysis report

Static analysis result for SHA-256 742ea75b0a0db57a…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 01:43:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 402e123f736d274d0a74cc7fe8cb8b66 SHA-1: aa0c58e49c644b93c3894501f39350f6d4043bb8 SHA-256: 742ea75b0a0db57ad2a8c3050dec63f39af239bef65d55642005fd00b1ee930c
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 are SEO-optimized and point to websites offering game hacks and cheats. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document's primary purpose appears to be a lure for downloading unauthorized game modifications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/479516143/minecraft-java-edition-free-trial-game-hack PDF link annotation
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/roblox-after-the-flash-hack-item-unlocker_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/admin-code-for-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/robux-hack-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-bc-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/how-to-insert-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/groups-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/dowload-wall-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/pastebin-com-raw-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/how-to-hack-weight-lifting-sim-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F5 22416 bytes
SHA-256: 70bc61b617ec212b54e69e7183d27fd426d89ade3fd63eaba9ad8dff610c1091
font_01_sfnt_off000063bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BB 18524 bytes
SHA-256: d4a994fd7502902f1ccb0c5c51989318f5cd97a3a708631542142bcef13529e5

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