Malicious PDF — malware analysis report

Static analysis result for SHA-256 524baedc10c7e08d…

MALICIOUS

PDF

47.4 KB Created: 2021-06-03 10:23:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: bfd051b3f3ac8d28d02232892a47c3d9 SHA-1: 84b389a2cb1fbcf8f198d39e6a0fb15dd7d75ce3 SHA-256: 524baedc10c7e08db386408e1292b3d101331ff4c8072d4d04f0109913cc946b
102 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are SEO-optimized to appear as legitimate download pages for popular games. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or downloads. The document body, though heavily obfuscated, contains a URL that aligns with the lure of free game downloads.

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/minecraft-free-download-no-virus-game-hack PDF link annotation
    • http://slims.abulyatama.ac.id//repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52CC 25000 bytes
SHA-256: beb74f27391469abff8a7349229ef7b9aef70956a2f5c761ad9220fcd0dfa6bf
font_01_sfnt_off00008c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C11 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off000095c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C3 18564 bytes
SHA-256: 73fda2f7f87cf364c845d3fc1df52f7bb102f180f2e093609ba7690804eae928

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