Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc9c23a822761a01…

MALICIOUS

PDF

43.9 KB Created: 2020-09-04 00:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0150754023299d85be5b9270ee7e33e6 SHA-1: 3505d89c2efecd02b75cbc106f6a69f5d3e16a4a SHA-256: fc9c23a822761a017d65e0aa409fb5a91897f0d8def2e01c37191076b817244a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/wix?keyword=galveston+beach+bacteria+report'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains this URL, reinforcing its role as a lure. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning tactic to distribute the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=galveston+beach+bacteria+report
    • https://cdn.shopify.com/s/files/1/0435/6577/7059/files/john_deere_l_108.pdf
    • https://cdn.shopify.com/s/files/1/0441/3777/5256/files/furidojofixak.pdf
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/alif_lam_mim_para.pdf
    • https://cdn.shopify.com/s/files/1/0440/6044/2774/files/37240481237.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/955075526.pdf
    • https://static.usrfiles.com/ugd/ad2ade_66ebb5fbd9a345efae1cb502f0ef7573.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8763/files/free_christmas_music_mix.pdf
    • https://cdn.shopify.com/s/files/1/0430/9640/8218/files/36944140807.pdf
    • https://cdn.shopify.com/s/files/1/0447/0656/2201/files/apprendre_python_de_a__z.pdf
    • https://cdn.shopify.com/s/files/1/0436/2744/6435/files/vmware_license_key_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/0908/9447/files/ponupuxutafozonapiwobol.pdf
    • https://cdn.shopify.com/s/files/1/0462/6618/7933/files/letegod.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_off000061f8.bin
7f9ee38ce06eb946b51c4f3f0dbe7287dbcff5226f587d0e0ee8f24e054b762f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F8 5040 bytes
font_01_sfnt_off00007315.bin
969a9aa21692132ed5859c35718c6534ecddc22c85056a8891d2e239bafe5880		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7315 10024 bytes
font_02_sfnt_off000094de.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94DE 4324 bytes

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