Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ab65f6d700bde7…

MALICIOUS

PDF

51.3 KB Created: 2020-09-03 00:00:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 955622924433b9f596258814a93c3e18 SHA-1: f21c4a6821b427cde03b784916ab5a6c877912e5 SHA-256: e0ab65f6d700bde79a421a3f5136d7a68219202d31cee9cac512332d64a3cdbe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=appvalley+vip+apk+location', suggesting a lure to download an application. Another heuristic indicates a password-protected archive lure, implying the PDF is a delivery mechanism for a subsequent payload. The presence of numerous PDF links, many pointing to Shopify, suggests a link farm for SEO poisoning.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ttraff.com/wix?keyword=appvalley+vip+apk+location
    • https://cdn.shopify.com/s/files/1/0436/8069/4437/files/langman_s_medical_embryology_13th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0461/5376/0931/files/arcane_legends_new_version.pdf
    • https://cdn.shopify.com/s/files/1/0437/7745/8334/files/atmospheric_refraction_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0429/0750/0711/files/91538516742.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_7dfcf37515e147e79c4fa23747c606cd.pdf
    • https://static.usrfiles.com/ugd/44b221_0c09f7941ef24d58bc5af96831d0f3c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_06c2953bfe0242299008cf429c93311e.pdf
    • https://static.usrfiles.com/ugd/f515ca_a275f4a6183d4bd78f2a459fec2d168d.pdf
    • https://static.usrfiles.com/ugd/0779a3_87ca4bc56d8746a9aa75cceb5782b9bd.pdf
    • https://static.usrfiles.com/ugd/3bca44_2c14609be8db47e8a5d363dfae391aa5.pdf
    • https://static.usrfiles.com/ugd/28b3f7_a58aa750605f4a6591b8ea7e76945d4d.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://static.usrfiles.com/u

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c2a.bin
3addcc9a94e0cdf450169e06f84f0da181998835872a78371e09c69d322c40a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2A 4868 bytes
font_01_sfnt_off00009ce0.bin
adb6fbdda298828c9ceacd96286d4fc172159cce467791e9e4dcebfa7a58f453		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE0 10420 bytes

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