Malicious PDF — malware analysis report

Static analysis result for SHA-256 5676bbc309e64d26…

MALICIOUS

PDF

45.6 KB Created: 2021-05-13 18:24:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cca62ffb6998a9d7b020bfe5d730ff8a SHA-1: d32cf49de8df890290a1a473d114ff2d1a7b3508 SHA-256: 5676bbc309e64d2656de8d3802800302b754a2cdacf9e3285741c3a6c68babb4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents a lure related to hacking Roblox accounts, containing embedded URLs that likely lead to malicious content or phishing pages. The ML classifier strongly flagged this PDF as malicious, and the presence of MFA lure heuristics suggests an attempt to harvest credentials or session tokens. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-hack-someone
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-app_GM406889139.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/what-are-points-for-in-roblox_GM431946152.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/free-robux-apk_GM431946152.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/coin-master-hack-online-link_GM406889139.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/app-master_GM406889139.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/free-online-generator-for-coin-master_GM406889139.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/robux-fun-hack_GM431946152.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/master-coin-free-spin_GM406889139.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/coin-master-hack-online_GM406889139.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/how-do-i-get-robux-on-roblox_GM431946152.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/100-robux_GM431946152.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/free-robux-com_GM431946152.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/get-free-spins-from-coin-master_GM406889139.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/free-roblox-shirt-templates_GM431946152.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/is-roblox-studio-free_GM431946152.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/free-roblox-accounts-dantdm_GM431946152.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-gift-cards_GM431946152.pdf
    • https://elearning.mtsnurulyaqingtlo.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004f10.bin
215487e1d1de05c5f341db36b1c7eb5def0662dba97f9ba931a75c11b8f05023		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F10 27164 bytes
font_01_sfnt_off00008c9e.bin
0830f2bc2b032c7ad37be74462a8461862374830fa053aba1852b18e492c5f08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9E 19316 bytes

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