Malicious PDF — malware analysis report

Static analysis result for SHA-256 5050c6afd47ef19c…

MALICIOUS

PDF

42.5 KB Created: 2020-08-07 08:17:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65f53434564a00723d20ae41abc84e9b SHA-1: 75e79503d2cc79826a5b0add03ffea9ce73b0646 SHA-256: 5050c6afd47ef19c1ae70d5e339d6b6a3ad5aaf78522fdcd0b03e9e872c08e22
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body contains garbled text but includes the target URL, indicating a social engineering lure for users searching for specific PDF content.

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=livro+aprender+espanhol+pdf
    • http://baminum.sacredsecretskincare.org/uploads/1/3/1/6/131636725/bivepidora.pdf
    • http://files.truegritartgallery.com/uploads/1/3/1/3/131380666/guvag_vaduweneju.pdf
    • http://files.lindsayreidart.co.uk/uploads/1/3/2/6/132696598/ecce4e724dc74d3.pdf
    • http://kirawe.destinyaurora.net/uploads/1/3/0/8/130873951/3a31e8.pdf
    • https://cdn.shopify.com/s/files/1/0428/6038/0327/files/naruto_vs_goku_games.pdf
    • https://cdn.shopify.com/s/files/1/0431/8583/2096/files/fujogubaneketodixijom.pdf
    • https://cdn.shopify.com/s/files/1/0433/9721/8471/files/norma_035_riesgos_psicosociales.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/kinizinafigikudutaretepoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/2201/4870/files/11458232835.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/talomefakulezofezetax.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/zejelin.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2459/files/geluwafaka.pdf
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/21864595132.pdf
    • https://cdn.shopify.com/s/files/1/0428/7578/1276/files/43291364322.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/94_gmc_sierra.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2512/files/76126631331.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_off00006449.bin
df67312337ddc173ca3e71f10fb8269428c7d6eebf7dd505dbabbbe35d378f96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6449 5128 bytes
font_01_sfnt_off000075bf.bin
eab40a12970451217bb74dbf9ebbfc338e0f114a93d4272cfcf3eaebcf34b586		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BF 12416 bytes

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