Malicious PDF — malware analysis report

Static analysis result for SHA-256 e57d556549a368e4…

MALICIOUS

PDF

39.7 KB Created: 2020-08-19 13:12:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c172b3672a100c291c807c9f11283c5 SHA-1: ee26e164e62451bcf0f5277649474d022fa4d77b SHA-256: e57d556549a368e4e9e476d41d1356e131a814be8c8493e71b8b80abb520da9c
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a large number of external PDF links, many hosted on Shopify, suggesting an attempt to game search engines or distribute content. The primary malicious URL identified is ttraff.com, which is likely used for redirection to further malicious 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=brevet+anglais+2019+pdf
    • http://files.michaelnewmannovelist.com/uploads/1/3/0/9/130969768/gikejarenoxesowil.pdf
    • https://cdn.shopify.com/s/files/1/0433/9181/1734/files/physics_book_for_bsc_part_1_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/22752173361.pdf
    • https://cdn.shopify.com/s/files/1/0430/1979/6633/files/xopesajawilub.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/zosisesikeniwipilexe.pdf
    • https://cdn.shopify.com/s/files/1/0435/7524/7003/files/apprendre_chinois_debutant.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/bexozugek.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/dudadozire.pdf
    • https://cdn.shopify.com/s/files/1/0431/5391/6060/files/dizamogenejesa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004dc0.bin
ebd30f3400b79ced74476e1b10858718aad0e68cc206db8a3829466c93e91932		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC0 5800 bytes
font_01_sfnt_off00006194.bin
56a53b80793a57ae0a2ff185a047ca1e37b57a0e8d64e13b04e3c35c58b8895d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6194 1956 bytes
font_02_sfnt_off00006ab7.bin
2e9547b906ae0854ea142838746735c3414ac21513232aae7f36c96b1866fdd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB7 11820 bytes

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