Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cbd363cd532ad86…

MALICIOUS

PDF

59.4 KB Created: 2021-05-19 03:45:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: feaf1d5f95591c6e08373bc68b23d90e SHA-1: 36c8fae5501ce23045cc6a523c48fe8e9a94cc1d SHA-256: 4cbd363cd532ad86dc0532f5cb97c69f5d693c499146b94291dc75e0c0881f09
82 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier as malicious. It contains multiple embedded URLs, including one pointing to 'netcdn.xyz' which is associated with a lure for 'Roblox40.com Robux game hack'. The heuristics indicate brand-impersonation credential phishing, specifically impersonating UPS, with a call-to-action link that does not match the impersonated brand. The presence of a visual download button further supports a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9547

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/roblox40.com-robux-game-hack.
  • 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/431946152/roblox40.com-robux-game-hack PDF link annotation
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/infinite-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-robux-clothes_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_003_off00004e7e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E7E 36720 bytes
SHA-256: f7937c735c872883e8d1a8e9495a3c6afa0305fed8bd2e9615419bc8bb891b0a
font_01_sfnt_off00009d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D96 13008 bytes
SHA-256: ac57d65b126539fb5df065fcbdb3b5984a1e7243db50922f80386c21e1cc483a
font_02_sfnt_off0000c61f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC61F 18484 bytes
SHA-256: 9918e4e201cf4584f779f98ae8fff3df607e64c5e2e67c0d23409290931a1188

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