Malicious PDF — malware analysis report

Static analysis result for SHA-256 49606b51d932e5d9…

MALICIOUS

PDF

47.8 KB Created: 2020-09-02 00:25:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f2c2b734773e9afae28a1d17994a7ac SHA-1: b7700cd9760a48595514a4755171a48410478d76 SHA-256: 49606b51d932e5d92449cf44cc4eec1b7fd03b68281fa45424a2b2643cac9e5b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=angry+birds+epic++windows+7'. The document body, though heavily obfuscated, contains references to this URL and the lure of 'Angry Birds Epic Windows 7'. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The primary malicious IOC is the ttraff.com redirector, which likely leads to further malicious content.

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.com/wix?keyword=angry+birds+epic++windows+7
    • https://cdn.shopify.com/s/files/1/0440/2076/0741/files/square_root_of_135.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1513/files/anatomia_de_la_piel_y_anexos.pdf
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/59046694343.pdf
    • https://cdn.shopify.com/s/files/1/0432/5802/0004/files/ccleaner_free_cnet.pdf
    • https://cdn.shopify.com/s/files/1/0435/6286/0699/files/arrecifes_de_coral_flora_y_fauna.pdf
    • https://static.usrfiles.com/ugd/6290de_42b6339dfa264c6ab99cbc667f06a0bf.pdf
    • https://static.usrfiles.com/ugd/05900a_35744af561004a8284225ff34138ef20.pdf
    • https://static.usrfiles.com/ugd/f35da0_2c617c8dc3894be5af9c33c53c46d5bd.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f2b8e7dab6147c78548b4e5b26f0096.pdf
    • https://static.usrfiles.com/ugd/5bb01c_375ffebe3c3c4a4b925b39d0954ea671.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f2d.bin
30f7c235771e6b78c77eb531e364c5f44b877f4557224f6f92e9ccc48afbb61a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2D 5108 bytes
font_01_sfnt_off0000809f.bin
f3d9521127df90f271e22edde1dcc8036256a300ed5e1e23c0e1dcf850e4b25d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x809F 10516 bytes
font_02_sfnt_off0000a49f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA49F 4324 bytes

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