Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab1de2693b60bc2…

MALICIOUS

PDF

41.9 KB Created: 2020-08-15 18:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 908c9aeb102a53c7712258e15c0bb9ec SHA-1: 1d85eae27d7a61fd0709e5540c626796f42f0742 SHA-256: dab1de2693b60bc26c1cc709f36f36202c64562cd86b296a51efc1eec9ec9f5a
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources disguised as PDF files. One of the primary links, https://ttraff.ru/wb?keyword=areas%20y%20volumenes%20de%20solidos%20de%20revolucion%20pdf, is identified as a malicious redirector. This suggests the document's purpose is to direct users to potentially harmful websites through a link farm strategy.

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.ru/wb?keyword=areas%20y%20volumenes%20de%20solidos%20de%20revolucion%20pdf
    • http://jugalazi.nasiiclothingstore.com/uploads/1/3/1/6/131637016/6414532.pdf
    • http://files.friendsoflakenormanstatepark.org/uploads/1/3/0/7/130776511/jisidabivi.pdf
    • http://files.armidaleunhoused.com/uploads/1/3/0/8/130814674/8e43cc0.pdf
    • https://cdn.shopify.com/s/files/1/0430/5341/6601/files/buduredavipogoku.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/4390449001.pdf
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/ems_tracking_china.pdf
    • https://cdn.shopify.com/s/files/1/0434/4745/1798/files/how_to_install_beautiful_discord.pdf
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/microfacies_of_carbonate_rocks_flugel.pdf
    • https://cdn.shopify.com/s/files/1/0440/3331/0870/files/preliminary_general_maths_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4023/files/puwuremuboduteto.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/49826012953.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/pametasajezemanamefikare.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_off0000595a.bin
cc602af2b775af2009eb428ead001b2ab72aaa34f4c9fa96a2efc9a6adaf3771		 pdf-font-stream PDF embedded font (sfnt) at offset 0x595A 5252 bytes
font_01_sfnt_off00006b22.bin
20c7d02a177ceada0fa2124adfe3093016cdda31c5b956d3c5f7a1b22eb400e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B22 9720 bytes
font_02_sfnt_off00008c81.bin
781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C81 4324 bytes

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