Malicious PDF — malware analysis report

Static analysis result for SHA-256 a877a5b76b7465f6…

MALICIOUS

PDF

68.3 KB Created: 2020-08-08 15:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45a5932309362c198d0b3fd46fa21e1d SHA-1: b8c879745874da0bd6344239bc528283e6988d06 SHA-256: a877a5b76b7465f66147e3c7b7fb16c368cc31b1f690d972da976b190939df33
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=map+metro+london+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Map metro london pdf', suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, further supports the idea of a link farm or distribution mechanism.

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/pify?keyword=map+metro+london+pdf
    • http://files.communitybaptistcoldlake.com/uploads/1/3/0/7/130740323/843dab3b2e.pdf
    • http://files.tracygs.com/uploads/1/3/2/6/132681634/numovotif.pdf
    • http://files.gloscommunityofpractice.org/uploads/1/3/2/6/132695517/wojim.pdf
    • http://files.churchillsummercamps.co.uk/uploads/1/3/0/7/130740524/vepanidimi_subini_vegoket_ribav.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/buralobopituvogiziv.pdf
    • https://cdn.shopify.com/s/files/1/0432/5372/7394/files/how_to_replace_blocks_in_minecraft_command.pdf
    • https://cdn.shopify.com/s/files/1/0437/1467/4841/files/classroom_language_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0436/5965/7374/files/bipatesemik.pdf
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/bikirur.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4665/files/13066510926.pdf
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/21771522633.pdf
    • https://cdn.shopify.com/s/files/1/0433/5291/6119/files/sunbeam_bread_maker_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4778/8450/files/jokipafezema.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5959/files/bermuda_bus_schedule_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/90847075222.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_off0000c345.bin
79c0a4561797c7ddbcb0bb2c6962c27c887cb8b233ed5325c5a9d4e4abbbe1e4
pdf-font-stream PDF embedded font (sfnt) at offset 0xC345 4756 bytes
font_01_sfnt_off0000d34e.bin
af9d84acb52c1374ffd8e3b3e722877141b5470c0b1242844f16560522feeeb6
pdf-font-stream PDF embedded font (sfnt) at offset 0xD34E 10288 bytes
font_02_sfnt_off0000f63e.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF63E 4324 bytes