Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbdcbd2fd1d425d7…

MALICIOUS

PDF

46.2 KB Created: 2021-05-19 17:47:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b43f6162b172de1b3d541d121a037162 SHA-1: 31475acab288e9f0642f1c5d8f0fbb96a66ac3a6 SHA-256: dbdcbd2fd1d425d7db4bc61bec650167ba023f0b57e92847d18dfd8fcc08c17c
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 appear to be SEO-driven and point to game-related content, suggesting a link farm or content-laundering operation. One embedded URI, 'https://netcdn.xyz/app/479516143/minecraft-bedrock-client-game-hack', is directly associated with a malicious ML classification. The document's structure and embedded links indicate an attempt to drive traffic to potentially malicious download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/minecraft-bedrock-client-game-hack PDF link annotation
    • https://scraperite.com/images/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • https://scraperite.com/images/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/get-robux-now_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/get-minecraft-for-free_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
font_00_sfnt_off0000489c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x489C 29120 bytes
SHA-256: a2b26caae3be0124b3c4aaeaf95abe27b93e960648dcc7391ec061d9d142e621
font_01_sfnt_off00008849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8849 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off000091e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E9 18344 bytes
SHA-256: c9cb66d1f867d8d8b778a8f6a6e4b7827efe3961d145c36f38d04236c8971b27

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