Malicious PDF — malware analysis report

Static analysis result for SHA-256 6094778d882b9c5e…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 01:43:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fbb8d9daf80cd8068d0e62bcec24d18d SHA-1: 6d3ba2eb7f14c6bcc0578eb9834897bee41634ba SHA-256: 6094778d882b9c5ebc1ff1528d34c256bcbd2e661cf83d5ff45aa86178342ebe
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a clear lure for free Robux, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://netcdn.tw/app/431946152/how-do-i-get-free-robux-on-roblox-game-hack PDF link annotation
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/descargar-hack-robux-gratis_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-hack-no-inspect-2021_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-get-cartoony-animation-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/roblox-account-taker_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/robux-free-tips-download_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-roblox-accounts-2021-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/roblox-call-of-robloxia-5-cheats_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/roblox-printables-free_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/cheat-roblox-lumber-tycoon-2-2021_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/generate-free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/roblox-free-game-play-online_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7C 22560 bytes
SHA-256: 1fcf5033d142902162456b3aa777a67e970bb84c10a943992eb55db89c4cd264
font_01_sfnt_off000061f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F0 19228 bytes
SHA-256: e9643cf535cb35bfe77301aa7fad2e30087b9ada5d7646565701a14096303307

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