Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aa4b9f0a3232f52…

MALICIOUS

PDF

43.8 KB Created: 2021-05-14 20:19:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f781f42bbf1fd3768fbe5395bcbe3ecb SHA-1: 6637acb8459566659173352ac9f61b3b3f7c7d46 SHA-256: 0aa4b9f0a3232f5217629260da6f057f9436c4b779911b7a1b8e80b8bfdf1ac5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a heuristic firing for an MFA lure, suggesting a phishing attempt. The document body, though partially corrupted, mentions 'free Robux' and includes a link to a website that also promises 'free robux on pc game hack'. This indicates a likely scam or credential harvesting operation. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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-get-free-robux-on-pc-game-hack PDF link annotation
    • https://mayastisingkawang.com/__statics/gudangsoal/files/roblox-free-printables_GM431946152.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/roblox-free-login_GM431946152.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://mayastisingkawang.com/__statics/gudangsoal/files/free-minecraft-hosting_GM479516143.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_003_off00004a30.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A30 27256 bytes
SHA-256: 196e6229743a3c6f34a1d67d5a42e0855f42bedf5e8d7580ef89daf0a767f985
font_01_sfnt_off0000888d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888D 18436 bytes
SHA-256: 3da4067756d8a9659bbf1d91e8f5987ff560a340f178cc4f41ff3c3676747205

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