Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca7fb1f06c4341da…

MALICIOUS

PDF

41.1 KB Created: 2020-08-17 01:29:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9604d2b432b59543f29b5c46504eacf9 SHA-1: eb266cc634ff363d70babca59db75b846eb428ca SHA-256: ca7fb1f06c4341da9ed646d363cce05de80f5438210f6f2df32c72f9e59cd310
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used to lure victims. It also contains a PDF link farm heuristic, indicating a large number of external links, with one pointing to a Shopify domain. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=pdf+split+and+merge++mac' and other Shopify URLs, suggesting a phishing or scam attempt.

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/pify?keyword=pdf+split+and+merge++mac
    • http://files.coastlinepainting-nc.com/uploads/1/3/2/6/132682785/4af7fdd824.pdf
    • https://cdn.shopify.com/s/files/1/0445/1673/7183/files/kurirapona.pdf
    • https://cdn.shopify.com/s/files/1/0440/2606/9157/files/blissful_marriage.pdf
    • https://cdn.shopify.com/s/files/1/0429/2752/1948/files/fukukuxuromoder.pdf
    • https://cdn.shopify.com/s/files/1/0435/3084/6363/files/26989074790.pdf
    • https://cdn.shopify.com/s/files/1/0437/0608/9640/files/taclane_kg_175d_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/8322/5506/files/logaligu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4356/files/marathi_calendar_2020_september.pdf
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/fujukezeru.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/matanetiloximib.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/siviwisiwob.pdf
    • https://cdn.shopify.com/s/files/1/0440/8469/1094/files/76829200932.pdf
    • https://cdn.shopify.com/s/files/1/0432/1466/7936/files/no_verity_opt_encrypt.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_off0000624e.bin
d351684284ebfe8d4410f1ae5c0da9e9623b480cc372582ee1904b39057f0d58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624E 5476 bytes
font_01_sfnt_off000074cd.bin
437701ebe52e5d11daf210a656b3c5c45a1875654dcc6aaa9d2fa9779a80c48b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74CD 10228 bytes

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