Malicious PDF — malware analysis report

Static analysis result for SHA-256 76db00a4c6d3dd33…

MALICIOUS

PDF

43.8 KB Created: 2020-08-11 20:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3abb072614293376685d9f20832f54b3 SHA-1: f0606bab5b2f87aa7910650165212d1683b8cefd SHA-256: 76db00a4c6d3dd33e0d12d47e94ec44045e9210a29f63b0cb87c94278bfa512e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary link, 'https://ttraff.com/pify?keyword=assets+accounting+pdf', is identified as malicious. While many other links point to benign Shopify URLs, the presence of the malicious redirector and the PDF structure suggest an attempt to lead the user to a harmful destination, likely for phishing or malware delivery.

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=assets+accounting+pdf
    • http://jowisu.pamelabenham.com/uploads/1/3/1/0/131069934/4feec.pdf
    • http://files.christumcutah.org/uploads/1/3/2/3/132302768/6066217.pdf
    • http://files.beerliquordelivery.ca/uploads/1/3/2/6/132682701/zarowuje.pdf
    • https://cdn.shopify.com/s/files/1/0439/4002/0382/files/4692531404.pdf
    • https://cdn.shopify.com/s/files/1/0435/9382/6463/files/i_m_not_a_vampire_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/conjugaison_du_verbe_etre_et_avoir_en_anglais.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5159/files/62901573757.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/10026940492.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/padimexokemeko.pdf
    • https://cdn.shopify.com/s/files/1/0434/4732/0728/files/70174842270.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdf
    • https://cdn.shopify.com/s/files/1/0439/5089/9368/files/iupac_periodic_table_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/2247/3624/files/abbyy_transformer_plus_serial_key.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_off00006d3c.bin
0b94373d7d4491f2e78762a8e190006c32e5d27a5cd546a81fd12da0d7677efd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3C 5184 bytes
font_01_sfnt_off00007ef2.bin
7ce998388682f95668716304ced91564c7995b6d453941e67dfb070b9c873001
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF2 10476 bytes