Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6af1488790b53c1…

MALICIOUS

PDF

35.6 KB Created: 2020-08-20 13:07:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4df495525e62575c4ca113e34a6b7c34 SHA-1: 825515039da4b2f209423bc466dd302a0430e813 SHA-256: e6af1488790b53c1235521237d277588f0b713da0c4bddeeb9be3923dc7a75d7
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=forest+animals+coloring+page+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack pattern involves luring the user to click the link under the guise of a coloring page, leading to malicious infrastructure.

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=forest+animals+coloring+page+pdf
    • http://files.marieliterary.com/uploads/1/3/1/4/131483830/wapefisapopekel_resajemerimogik.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3779/files/sugetevoxibokidasim.pdf
    • https://cdn.shopify.com/s/files/1/0429/8889/6415/files/85471134086.pdf
    • https://cdn.shopify.com/s/files/1/0434/6983/2342/files/lidatukatigo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67257536452.pdf
    • https://cdn.shopify.com/s/files/1/0433/6821/8780/files/cash_book_in_tally_erp_9.pdf
    • https://cdn.shopify.com/s/files/1/0438/7376/3496/files/araby_poem.pdf
    • https://cdn.shopify.com/s/files/1/0431/0695/9514/files/53536011670.pdf
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/nakoba.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8811/files/fonefodusekaxux.pdf
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/cadena_alimenticia_y_niveles_troficos.pdf
    • https://cdn.shopify.com/s/files/1/0441/3066/4600/files/catalyst_9200_datasheet.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_off00004b94.bin
5109ef80d9c8e5a7d8e0f2948e775514073d028a46df5231ac33f9e153255096		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B94 5432 bytes
font_01_sfnt_off00005df8.bin
ef4c6639cbb67a02aaec06946056b7afea5f03771b7074ced1bbe11a241d67e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF8 10612 bytes

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