Malicious PDF — malware analysis report

Static analysis result for SHA-256 7714a5253f849fe5…

MALICIOUS

PDF

46.7 KB Created: 2021-06-08 10:38:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 06381bcb64c4d4c859947cd5686010b0 SHA-1: 643fa5d8b1142c9db14dc73bce5eae7aa5b9bb40 SHA-256: 7714a5253f849fe5ff58858837274536e3b5619d09c9b69c34e838c0e7cbe9df
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which point to other PDF files hosted on similar domains, suggesting a link farm designed to attract users searching for game cheats or hacks. The document body and embedded links indicate a lure related to obtaining 'Robux' for the game Roblox, a common theme in phishing and malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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.tw/app/431946152/ways-hacks-robux-game-hack PDF link annotation
    • https://zosnow.com/wp-content/uploads/fsqm-files/admin-hack-script-roblox_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/roblox-free-card-codes-december-2021_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/roblox-gift-card-codes-2021-free_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/how-to-download-roblox-on-ps4-for-free_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/roblox-dll-cheats_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/roblox-bots-to-join-a-group-for-free_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-hacks-no-scams_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-inspect_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/pastebin-roblox-items-free_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/does-roblox-give-free-robux_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/free-items-robloxcom_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/roblox-cheats-2021-may_GM431946152.pdfIn PDF document text
    • https://zosnow.com/wp-content/uploads/fsqm-files/hack-cojer-cosas-del-catalog-sin-tener-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000508c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x508C 25536 bytes
SHA-256: 187d72fb67a3dbe19528c618e20143d7e2d69a7adc3a4569ff41d0e35476afd0
font_01_sfnt_off000088d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D9 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00009279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9279 18628 bytes
SHA-256: d90cf6cb39088d8c476661e35fcf887e5c1d21e72417cadb7a45b3fa93ce6ea7

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