Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f2f43ca7caddad…

MALICIOUS

PDF

38.1 KB Created: 2020-09-01 12:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d1165e2c108bbec7359f03ffdb3f6c3 SHA-1: 69804ba67fa7bc3e0ef3e1900f4cc8afee9c58a2 SHA-256: 32f2f43ca7caddad69469c01dc673e31690603709aff5d2ede94008e791f75de
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, many of which point to a redirector service. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the malicious URL and a list of other URLs, suggesting a link farm or redirection scheme. No scripts were extracted from this sample.

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=frescobaldi+remole+tech+sheet
    • https://static.usrfiles.com/ugd/b8c837_f0364a0c79614c7c8e994394df21ac15.pdf
    • https://static.usrfiles.com/ugd/48d9a1_82e125b2d750495c8e26848ed7c722af.pdf
    • https://static.usrfiles.com/ugd/33a2e4_4f8728e51ad34ad8aab945651c3cc917.pdf
    • https://static.usrfiles.com/ugd/9e41f0_5ea17fd4310541a7a954db6d50337bae.pdf
    • https://static.usrfiles.com/ugd/b65acf_774bb3ed41764834baf651fba59e59f6.pdf
    • https://static.usrfiles.com/ugd/576447_ff0cc814c72c44eb804fc6a1017eb543.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_d0feed72ff34447eb6d111fd5b3b0bdf.pdf
    • https://static.usrfiles.com/ugd/f09a9d_1fde7ee280e84c118ce09e91ad146bcf.pdf
    • https://static.usrfiles.com/ugd/2f7815_a386957689bb400389ceaf459124fbcb.pdf
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/street_fighter_v_arcade_edition_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/4877/1488/files/jofujibijeripaxaraze.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_off000055cc.bin
f90fc326e723526488c44967ea46ee100f1c320d05428630f12be32dcc680a74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55CC 5272 bytes
font_01_sfnt_off00006788.bin
d5f8778d0bb59ace2ef7c270ef05d73a04c3d048f48e477111ff1230bff7eeb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6788 10740 bytes

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