Malicious PDF — malware analysis report

Static analysis result for SHA-256 d005d75d7333c83e…

MALICIOUS

PDF

43.1 KB Created: 2021-06-03 07:37:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 581739558eb8204f158c2f842f3d495d SHA-1: f01154073156f5d3f0ba6b51d62d6d8bf656e3e6 SHA-256: d005d75d7333c83e87b13d3f28c6b95f6a55af0e59f3b7146a435bd0bd061afb
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Coin Master Spin Hack" and embeds a large number of external links, many of which point to other PDF files. This behavior is consistent with a link farm or a phishing campaign designed to drive traffic to malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.online/app/406889139/coin-master-spin-hack-game-hack
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/how-to-get-java-minecraft-for-free_GM479516143.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/rbx-robux_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/legit-coin-master-hack-october-2021_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/roblox-bux-free_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-spin-links-coin-master-2021_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/easy-points-gg_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-spin-coin-master-game_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/blogspot-coin-master-spins_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-unlimited-spins-hack_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/lazy-blocks-com-free-robux_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/how-to-get-free-clothes-on-roblox_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-heaven-free-daily-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f95.bin
987ca651be86581ec32fd9bcedf7711b83309571e50412ee6d74b27649529c57		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F95 24144 bytes
font_01_sfnt_off000086d3.bin
7f3ff29013eb9f1a81458cbc85dd3db40ecf793c6bb68bdfdc199744a029032c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86D3 17892 bytes

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