Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c38e868edae40d…

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 01:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 64f62c4b68956f37c526728f24534a54 SHA-1: a6e674506068a1ad532f66f42dbea1b0a8061332 SHA-256: 46c38e868edae40dc369dcfeba2828808ec03cf6d1fb25b9bbb8c054afc6ee14
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, including one that is algorithmically generated, suggesting a malicious intent to redirect users. The document body and embedded links promote free in-game currency for Coin Master, a common lure for phishing or malware distribution. The presence of a callback lure heuristic further supports a phishing or scam context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/406889139/free-coinmaster-spins-game-hack
    • https://heritagebanquethall.ca/images/coin-master-free-spin-daily-link_GM406889139.pdf
    • https://heritagebanquethall.ca/images/coin-master-hack-2021-link_GM406889139.pdf
    • https://heritagebanquethall.ca/images/coin-master-free-spins-coins_GM406889139.pdf
    • https://heritagebanquethall.ca/images/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdf
    • https://heritagebanquethall.ca/images/coin-master-free-link_GM406889139.pdf
    • https://heritagebanquethall.ca/images/coin-master-daily-spins_GM406889139.pdf
    • https://heritagebanquethall.ca/images/free-spin-link-for-coin-master_GM406889139.pdf
    • https://heritagebanquethall.ca/images/how-to-download-minecraft-for-free-on-android_GM479516143.pdf
    • https://heritagebanquethall.ca/images/coin-master-apk-hack-358_GM406889139.pdf
    • https://heritagebanquethall.ca/images/hacks-para-roblox_GM431946152.pdf
    • https://heritagebanquethall.ca/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://heritagebanquethall.ca/images/how-to-make-free-robux_GM431946152.pdf
    • https://heritagebanquethall.ca/images/mcpe-master-free-coins_GM406889139.pdf
    • https://heritagebanquethall.ca/images/coin-master-hack-pc-cheat-engine_GM406889139.pdf
    • https://heritagebanquethall.ca/images/how-to-get-free-unlimited-robux_GM431946152.pdf
    • https://heritagebanquethall.ca/images/free-accessories-roblox_GM431946152.pdf
    • https://heritagebanquethall.ca/images/coin-master-hack-cheat-engine_GM406889139.pdf
    • https://heritagebanquethall.ca/images/oprewards-login_GM431946152.pdf
    • https://heritagebanquethall.ca/images/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdf
    • https://heritagebanquethall.ca/images/roblox-com-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004816.bin
14b9d6de2e15621a8f8a529fbc1c91d7f1df7359f5066ffc710f1d45794a2b65		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4816 25988 bytes
font_01_sfnt_off0000839c.bin
ba216d9844178078b6875fb667333aee6c8c15dd3bf3ba058f093208140005b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x839C 18148 bytes

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