Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bb04566babd5d07…

MALICIOUS

PDF

39.9 KB Created: 2020-08-08 00:56:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a900723f229864d35a0d4dd5b7d79a6 SHA-1: 555d305335807a4d97477190a6bb5d33de61e722 SHA-256: 3bb04566babd5d07edd82994bf208cd73ad79e385ef6bf156dd2235facb0030b
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, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary URL, https://ttraff.com/pify?keyword=editorial+cartooning+symbols+pdf, is identified as a redirector. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a lure to external content. The presence of numerous links, many hosted on Shopify, points towards an attempt to distribute malicious content or phish users through a link farm.

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=editorial+cartooning+symbols+pdf
    • http://jaxim.clayartspace.com/uploads/1/3/1/4/131407164/115d9cd08ed5.pdf
    • http://files.bleedingheartsbotanicals.com/uploads/1/3/0/7/130775431/sirudaxotokiro.pdf
    • http://zuvabas.naturesedge-fl.org/uploads/1/3/1/6/131607600/womepulugi.pdf
    • http://tunevo.oneilbldrs.com/uploads/1/3/1/4/131453540/lazidulejovalukimuwu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2797/1741/files/48105769382.pdf
    • https://cdn.shopify.com/s/files/1/0434/4630/4920/files/vokurobalikixef.pdf
    • https://cdn.shopify.com/s/files/1/0431/9268/0605/files/abbyy_transformer_3_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/jarate.pdf
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/analogy_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/1660/1249/files/86444813975.pdf
    • https://cdn.shopify.com/s/files/1/0443/0639/9388/files/basic_electrical_engineering_made_easy_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/2218/8701/files/gupunelubakudibipit.pdf
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/save_pandas_dataframe_to_csv.pdf
    • https://cdn.shopify.com/s/files/1/0441/2784/6552/files/74661196906.pdf
    • https://cdn.shopify.com/s/files/1/0438/4574/6838/files/lowulapozaboper.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_off00005d01.bin
ead1fd02bdf3aea20af4eb3ddabb4f24efa08651f3151d177be1748d8304553d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D01 5676 bytes
font_01_sfnt_off00007041.bin
ace8e257e3ead852f3746aabf7b18bcc8ebd2a89f9f4c8130912f9dd2d8a17ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7041 10144 bytes

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