Malicious PDF — malware analysis report

Static analysis result for SHA-256 f90c74b7cacbbfb8…

MALICIOUS

PDF

37.5 KB Created: 2021-05-21 15:03:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: aaa6d18d80610c4319045c4dbe5dd520 SHA-1: 86bdaa35a085514849d0e4c984ab88dcb271dbe0 SHA-256: f90c74b7cacbbfb86dd998582e834cb13fdc466e3a8d83b834cef59296a386b0
82 Risk Score

Malware Insights

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

The PDF document contains a lure impersonating Amazon, directing users to a fake generator for 'Robux' via a malicious URL. The document body explicitly mentions 'How To Hack Roblox To Get Robux' and includes a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR'. The embedded URLs and the primary external URI point to domains unrelated to Amazon, indicating a credential phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/how-to-hack-roblox-to-get-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/how-to-hack-roblox-to-get-robux-game-hack PDF link annotation
    • http://www.maakherumusic.net/images/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/robux-hack-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003421.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3421 26032 bytes
SHA-256: ad1b9c5ba19476f2a7228e4a744abebf2d26b48db0ddffb5a4c4ed5c7d7e5295
font_01_sfnt_off00007045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7045 18588 bytes
SHA-256: 6723e17a0e3ea7e17da9fa5ee91cb22fe0fa4706a6f3d09ae44dda015c08872b

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