Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9d54d2557c12c88…

MALICIOUS

PDF

44.2 KB Created: 2020-08-29 12:52:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f41d9529d9b1eb17ed0f72a946945d0 SHA-1: 06cb848872a888068d373ff038012ee66080ce12 SHA-256: f9d54d2557c12c882fa96dd11231744ab83876587c5e5c76c8b0f16f4a02e825
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.com/wix?keyword=decimal+division+word+problems+grade', is flagged as a malicious redirector. The primary purpose appears to be SEO manipulation or directing users to potentially harmful content through a network of linked PDFs.

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=decimal+division+word+problems+grade
    • https://cdn.shopify.com/s/files/1/0437/5448/7969/files/swimming_pool_construction_details.pdf
    • https://cdn.shopify.com/s/files/1/0444/2878/7878/files/pandora_box_4_arcade.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/95246361482.pdf
    • https://static.usrfiles.com/ugd/b8c837_72ac287dc92f407fb616400383bbedd3.pdf
    • https://static.usrfiles.com/ugd/b8c837_c339c8983be644e3b4c99bf180b96e90.pdf
    • https://static.usrfiles.com/ugd/10b11f_41212622827a46249957682081b46696.pdf
    • https://cdn.shopify.com/s/files/1/0430/4853/4167/files/41583169488.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/39448360893.pdf
    • https://cdn.shopify.com/s/files/1/0433/4672/2969/files/cours_d_anglais_livre.pdf
    • https://cdn.shopify.com/s/files/1/0431/0266/6906/files/31002728107.pdf
    • https://cdn.shopify.com/s/files/1/0434/2880/6807/files/bifofajekawera.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_off000060df.bin
94ba9cf2ad6ead182801f1c15432c3348c50f63219495e72e392db99664282dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DF 5392 bytes
font_01_sfnt_off0000731a.bin
564dec68c0a5598444c070b575cacc80827e81b66e985b289570fd8666ced14b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x731A 10296 bytes
font_02_sfnt_off00009636.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9636 4324 bytes

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