Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9998e7084734f63…

MALICIOUS

PDF

38.5 KB Created: 2020-09-01 02:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b89a4d309ecf33ff9c1581f20aa0cb0 SHA-1: 054320657c5cd087f33f2dcc888508768689b504 SHA-256: f9998e7084734f639a57e59c83badea66d08d0ddc657f43ff7d0c9272b01eb70
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to create link farms. One of these links, 'https://ttraff.ru/wix?keyword=hangaroo+2+answers', is identified as a malicious redirector. This suggests the document's primary purpose is to direct users to malicious infrastructure, potentially for further exploitation or phishing.

Heuristics 3

  • 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.
  • 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.ru/wix?keyword=hangaroo+2+answers
    • https://static.usrfiles.com/ugd/20d83a_8f30985f6c0d4fa284882ea80af3f146.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_88eae7fdf741418183f6d8083d58f1f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_a81ace8223e44e36bc80f160beee2555.pdf
    • https://static.usrfiles.com/ugd/934fc3_dd2ca8099ba94e93b8f0b59e5471e2ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3b3e9e6523146d191ab8bd65508d732.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_f3ced4755bca4b00ac0bafb8dc775aa3.pdf
    • https://static.usrfiles.com/ugd/b8c837_1649157441a143e9b41e4bcc65abc0a2.pdf
    • https://static.usrfiles.com/ugd/aff7ca_b73788c0dae34d9a83c75b594e2bafff.pdf
    • https://static.usrfiles.com/ugd/c1de29_b25635b0016f4e4298dde0d371bea26e.pdf
    • https://static.usrfiles.com/ugd/909b15_175a2237f2284365a48ad9296a8e0fe3.pdf
    • https://static.usrfiles.com/ugd/cafc24_d626930c55bb44f0a0db9860dfca8227.pdf
    • https://cdn.shopify.com/s/files/1/0434/5551/2738/files/61979604602.pdf
    • https://cdn.shopify.com/s/files/1/0448/4897/1938/files/13_attributes_of_allah.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/62936513041.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f99.bin
efc87e54587be968cbb8f89ed95014da81ebed392db9e9a4d60e7324e9c262fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F99 5008 bytes
font_01_sfnt_off000060c4.bin
f28aa1feb9ff90fdc4e93791583798861e25f6ee57c8d008fbe8ec91685a57f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C4 14140 bytes

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