Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2784540dbd8ec10…

MALICIOUS

PDF

41.8 KB Created: 2020-08-14 21:52:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c5c6d89fcc8b238aef1926d9fc9e1f1 SHA-1: cba07e75d5f1d6d06974953d81a0b15b80024a96 SHA-256: f2784540dbd8ec10e960a21c0ea1a53d8c544be710277ada6f4c461f8dca60ba
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=transformation+chimique+physique', is identified as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and other links hosted on cdn.shopify.com, suggesting a coordinated effort to distribute malicious content through a large number of external references.

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=transformation+chimique+physique
    • http://files.youthfoodsovereignty.com/uploads/1/3/1/3/131380723/lemejuji_xilevokud_babolisiv.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/64172020956.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/casio_hr_100tm_ink.pdf
    • https://cdn.shopify.com/s/files/1/0433/4102/1334/files/23114349610.pdf
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/12214683834.pdf
    • https://cdn.shopify.com/s/files/1/0437/0890/7688/files/69045657462.pdf
    • https://cdn.shopify.com/s/files/1/0434/7995/7669/files/52601788181.pdf
    • https://cdn.shopify.com/s/files/1/0430/0472/3349/files/44619723639.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/tirebigasawaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/nikarilevawawuxirokosufo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nitopufekuriwuk.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_off0000620a.bin
42e8ccd8fcbff23ab920da687d854f464aa8ea91fda07a61492bfc8db303a283		 pdf-font-stream PDF embedded font (sfnt) at offset 0x620A 5400 bytes
font_01_sfnt_off00007444.bin
794c827f7daa1d7d6d21dc2e70684ecde529db7dc541e94cff71df43701d8361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7444 11604 bytes

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