Malicious PDF — malware analysis report

Static analysis result for SHA-256 75aba7edc8e93b74…

MALICIOUS

PDF

41.4 KB Created: 2021-05-13 09:10:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ba4f60ac4504e841a62d5c82fb40f955 SHA-1: 65f56d579a95e364cda10caab3f1198351bdd056 SHA-256: 75aba7edc8e93b745574f3a82452e08b12fdcd4d3620f60e43db3d07bf515978
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are SEO-optimized and point to pages offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of a download button lure and callback lure suggests a phishing or scam attempt. The document's primary purpose appears to be directing users to download potentially harmful files or engage with scam websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-online-hack-tool-game-hack PDF link annotation
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/roblox-comcom_GM431946152.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/haktuts-2021-coin-master-free-spin-link_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_off00004986.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4986 24200 bytes
SHA-256: eb632134f5fbe05441ff184175b07ef8b01b5ca689de6ffeeb347aa3b11fb6a1
font_01_sfnt_off000080ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80ED 17788 bytes
SHA-256: bc6de09e4d4e97b3cf6f96b8406f8eaea30a5a0b458aa8200154f31bbdde785a

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