Malicious PDF — malware analysis report

Static analysis result for SHA-256 aedf54cdd8057cf9…

MALICIOUS

PDF

72.5 KB Created: 2020-08-25 00:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 723a23826f348bedab7fa2684187e137 SHA-1: cbd16b86498916fc3f26b51b92cb0ad2b3e96fd3 SHA-256: aedf54cdd8057cf9b73b31f5787292e59f637adf57f1271ee13524c17f8b4d86
128 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, identified as a 'PDF_SEO_LINK_FARM'. One of these links, 'https://ttraff.ru/pify?keyword=cf+auto+root+g610m+android+8.+1', is flagged as a 'PDF_MALICIOUS_REDIRECTOR_LINK'. This suggests the document's primary purpose is to lure users into clicking malicious URLs, likely leading to further compromise.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=cf+auto+root+g610m+android+8.+1
    • http://files.cochrantonfair.org/uploads/1/3/2/7/132740536/mewekarukesewe.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/aseptic_technique_microbiology_lab_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1162/files/pdf_to_dwg_converter_software_free_download_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0434/9529/3094/files/human_body_parts_name_with_picture_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pujar.pdf
    • https://cdn.shopify.com/s/files/1/0436/7283/0105/files/how_to_cite_found_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8279/files/tutorial_cade_simu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/dimarotovelukopijisopex.pdf
    • https://cdn.shopify.com/s/files/1/0428/7977/8979/files/vobuxokopexowisotepisa.pdf
    • https://cdn.shopify.com/s/files/1/0439/0384/4520/files/venetinato.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8725/files/93103850218.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/62544328563.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/wusigefigera.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_off0000bcc9.bin
5129063bef353c826bd407c767cef08f05ca9c59b8e505ab27dae3498364285a
pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC9 5496 bytes
font_01_sfnt_off0000cf6b.bin
41b8261114071d13786965bfc4fed8e1164df63746b8a256dc4c745de7ab7046
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6B 15000 bytes
font_02_sfnt_off0000fe6b.bin
c982f799ccf285feddf0f41a399be9b4785a41081b4cb79ba98114c42c9d8f38
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6B 16464 bytes