Malicious PDF — malware analysis report

Static analysis result for SHA-256 d45da7eed6713331…

MALICIOUS

PDF

47.1 KB Created: 2021-05-15 15:30:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cebe831f953684350f4ea606eb47bdc7 SHA-1: 43d851148a6cc2e6aa133e3fff1ce0dd264abb97 SHA-256: d45da7eed671333182cf68693b03fffb2dc1293cc2d52a53dc7344d1f7ea29b3
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs pointing to sites offering game-related cheats and downloads, suggesting a lure for potentially unwanted or malicious software. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a visual download button heuristic further supports a malicious intent. Although no scripts were explicitly extracted, the document's structure and embedded links indicate it serves as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 https://netcdn.xyz/app/431946152/how-to-become-a-hacker-in-roblox-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.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
stream_003_off00004dd8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DD8 31344 bytes
SHA-256: 8d862b871c01f4c3475360ed428371cfeabffc0b6d3d1b3e43f7bb7961e81a37
font_01_sfnt_off0000952d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952D 18608 bytes
SHA-256: 64431d83c1c466192ca6f90c953545fb4db60ca1c30fe2a26ad653d3315a559e

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