Malicious PDF — malware analysis report

Static analysis result for SHA-256 361a3e5dadf653e2…

MALICIOUS

PDF

42.0 KB Created: 2020-08-22 17:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e90fed1f1bc7e8fb381a8b7dda577f8 SHA-1: a05696dcedb82dcd8a7b829eae6fdcc8b7ef5a6b SHA-256: 361a3e5dadf653e2b385558ce816a8ab362ad7281fd9f1cd83f6dfaab134c6a3
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 30 external PDF links identified, many hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=bd+facsverse+filter+guide', is flagged as a known malicious redirector. The presence of a link farm and a malicious redirector suggests an attempt to lure users to malicious content or to manipulate search engine rankings.

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=bd+facsverse+filter+guide
    • http://dagodepa.weikangtcm.com/uploads/1/3/0/8/130813965/livuxirudawune.pdf
    • http://files.pvmsgeography.com/uploads/1/3/1/6/131637362/pamewaxagajuf-pajusuw.pdf
    • http://files.geditorial.com/uploads/1/3/1/0/131070754/wipilev-sezimet-lonim.pdf
    • https://cdn.shopify.com/s/files/1/0451/3693/7125/files/how_to_sort_an_array_c.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/xojidilelonomolibunosej.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/27169895195.pdf
    • https://cdn.shopify.com/s/files/1/0435/1839/4527/files/happy_wheels_on_totaljerkface.pdf
    • https://cdn.shopify.com/s/files/1/0433/2974/9147/files/13870984073.pdf
    • https://cdn.shopify.com/s/files/1/0433/5747/0872/files/beauty_shop_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/algorithm_in_computer_science.pdf
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/get_of_fenris_tribebook.pdf
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/bedasame.pdf
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/resemodetikiwifegemu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6041/0021/files/lebobobazujine.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/project_accountant_job_description.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_off000065f4.bin
4f0045fbef2c894923d42ecdb3e67471604ca4175ff9d9642ab897184ddf3b37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F4 5296 bytes
font_01_sfnt_off00007808.bin
0ccfba348bf3b466f5e5a2b747780cb0ae9c9c601de241e3360122eb0ed89c84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7808 10432 bytes

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