Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d12d6364db7c9a…

MALICIOUS

PDF

39.5 KB Created: 2020-08-31 06:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4587e96e01ca82533a8641371371918f SHA-1: 247890427983ce4cf0a732156b8936d1e461ca21 SHA-256: c2d12d6364db7c9ab7080bde92873690ffe4799cf6a4c520e36e6615291c02d9
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 in SEO link farms to manipulate search engine rankings or distribute malicious content. One of the extracted URLs, 'https://ttraff.link/wix?keyword=statique+des+solides+exercices+corri', is flagged as a known malicious redirector. While most other Shopify links are benign, the presence of the malicious redirector indicates a likely attempt to lead the user to harmful websites.

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.link/wix?keyword=statique+des+solides+exercices+corri
    • https://cdn.shopify.com/s/files/1/0439/0250/1016/files/write_about_yourself_example.pdf
    • https://cdn.shopify.com/s/files/1/0439/1829/5195/files/65486629235.pdf
    • https://cdn.shopify.com/s/files/1/0429/3292/8671/files/witoberasixin.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/chesterfield_mi_weather_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/josuzafegeda.pdf
    • https://cdn.shopify.com/s/files/1/0438/7723/6904/files/desh_bhakti_par_geet_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5508/files/90485196944.pdf
    • https://cdn.shopify.com/s/files/1/0432/4642/0132/files/tubozog.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c38f64e06c6438f9b7e65ccef2aafa4.pdf
    • https://static.usrfiles.com/ugd/191a6d_6f99b900d081479dac89b258328b2d27.pdf
    • https://static.usrfiles.com/ugd/32acb1_327e71153fb649eba9e05c9981053245.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_off00005ab2.bin
bf833586cca3790e54b6fbb9dcda173484b9aeeb0853cf14e4dbfbcf4ed8f1de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB2 5232 bytes
font_01_sfnt_off00006c7c.bin
f2480c7a19806bf3404fdbd063c46601bfd76cfb6ccfa79a30e3d18ba4817003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7C 10824 bytes

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