Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c40b64c10caf0c3…

MALICIOUS

PDF

39.5 KB Created: 2020-08-21 00:41:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6262c9fedc4370302a49f8404636efef SHA-1: 888ee0a3bd365bb49eeffcaa91350d7472532308 SHA-256: 4c40b64c10caf0c3499df80d1ab712924f705f67abe2616d54409197c41c6f8e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=aking+pagmamahal+lyrics+free', likely leads to a malicious site. The file also contains a PDF link farm, with many URLs pointing to Shopify, likely for SEO manipulation or to host further malicious content. The document body itself is heavily obfuscated but contains the malicious URL and other PDF links.

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.cc/pify?keyword=aking+pagmamahal+lyrics+free
    • http://mifipede.transformurlifetoday.com/uploads/1/3/1/3/131379510/4044401.pdf
    • http://files.mariakiekari.com/uploads/1/3/2/6/132695730/99731062.pdf
    • https://cdn.shopify.com/s/files/1/0437/9544/7970/files/5819543630.pdf
    • https://cdn.shopify.com/s/files/1/0434/8674/0646/files/magegobumixarix.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/biodata_for_marriage_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/7274399416.pdf
    • https://cdn.shopify.com/s/files/1/0429/5000/0791/files/38408412704.pdf
    • https://cdn.shopify.com/s/files/1/0435/4772/1892/files/45150796841.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/introduction_to_autocad_plant_3d_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3756/4839/files/dewizifi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3418/0769/files/moscow_metro_map_russian_and_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/3513/1046/files/71522740982.pdf
    • https://cdn.shopify.com/s/files/1/0430/3300/2145/files/hamito-_semitic_etymological_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0440/2446/3525/files/13310576646.pdf
    • https://cdn.shopify.com/s/files/1/0432/4140/6631/files/gijelalenivo.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_off0000555a.bin
cc323cedf7ab8533fc75fa21ced0c335e8d5a758be6e278dd4871ab1bab2d81f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x555A 5584 bytes
font_01_sfnt_off0000682f.bin
cf9a3eed81ce30cf1402fbd078db954b6b63c9a9adf8657b93da1da3e40a81fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x682F 14800 bytes

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