Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddee94bcfe3671a4…

MALICIOUS

PDF

39.0 KB Created: 2020-08-31 06:15:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bdbec345f6498311730f98b4ae74fc9 SHA-1: ca2cfd08afc58edad1873e97ecdd2ce72215bc31 SHA-256: ddee94bcfe3671a45617a036c7a3aa1e9714aa8297887fdc4818005d2b14db5b
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 PDF files hosted on cdn.shopify.com. One of these links, however, directs to 'ttraff.com', which is identified as a known malicious redirector. The document body contains garbled text along with the malicious URL, suggesting an attempt to obscure the malicious intent. The presence of a link farm and a malicious redirector indicates a phishing or redirection attack.

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=android+studio+bundle+145++for+windows
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/binomial_probability_examples_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/2739/7797/files/gililejabulusiji.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/puvuwumiro.pdf
    • https://cdn.shopify.com/s/files/1/0436/0372/2398/files/brand_guidelines_en_francais.pdf
    • https://cdn.shopify.com/s/files/1/0428/2771/0630/files/muwanebepixevixolal.pdf
    • https://static.usrfiles.com/ugd/3649d2_f53deb62bb944fd4836a18e638e49626.pdf
    • https://cdn.shopify.com/s/files/1/0437/8771/4721/files/schneider_altivar_61_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/0845/0972/files/sutabegelusuvixovabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0121/6163/files/benepazamiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/rizesu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3964/6108/files/rousseau_kant_goethe_cassirer.pdf
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/81728605573.pdf
    • https://cdn.shopify.com/s/files/1/0438/2025/3344/files/autocad_electrical_wiring_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0435/7731/1391/files/aulularia_testo_latino_a_fronte.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_off00005b5a.bin
8bd2acafd5a083f1df1b84eec92d62a57909040e3e6610930aea60e35b2e10b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5A 5176 bytes
font_01_sfnt_off00006d24.bin
1a215dbdb60e0cbafa10b23d4366306ab74945fbb63143c87543cba07433d020		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D24 9956 bytes

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