Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfadfd40dc3c599d…

MALICIOUS

PDF

40.3 KB Created: 2020-08-14 16:25:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7913ad6802ff1e9edb06538491acf45 SHA-1: 7b972950e6c97301f11b64ea03f29309d6fed468 SHA-256: bfadfd40dc3c599df74eafc4e525c4e97da3e404245e80ae0187bcba345f08ea
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=esi+geometry+congruence+postulates+answers'. This URL is likely used to redirect the user to a malicious site. The document body also contains this URL, suggesting it's the primary lure. The presence of numerous other links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=esi+geometry+congruence+postulates+answers
    • http://tuxavo.alliedcommunity.org/uploads/1/3/0/7/130776728/4490120.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/sparknotes_les_miserables.pdf
    • https://cdn.shopify.com/s/files/1/0434/5767/5421/files/tedafivitebexuli.pdf
    • https://cdn.shopify.com/s/files/1/0434/6111/6064/files/andaman_and_nicobar_island_map.pdf
    • https://cdn.shopify.com/s/files/1/0436/2102/3904/files/mason_s_manual_of_legislative_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0428/5110/6972/files/36082023997.pdf
    • https://cdn.shopify.com/s/files/1/0431/9028/8535/files/92201837503.pdf
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/after_livro_5_baixar.pdf
    • https://cdn.shopify.com/s/files/1/0431/7986/8324/files/sebenamekafuvijixinev.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/xiruxevidos.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/marakidulitadegubozo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/46154620319.pdf
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/88570294550.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_off00004b1f.bin
0fb22d86363e77dab8023940ea1c5b40da2feeea9aa872701e534230e2d30b01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B1F 5404 bytes
font_01_sfnt_off00005d88.bin
1c0b5f42afb4fc2b9f2d9a4f203c8ce84672359ecb819ed343c0c4eddc8b4b11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D88 9504 bytes
font_02_sfnt_off00007e2c.bin
de18aae67e70b09f6aeb8f2eac927861d75073411ee08cfab20b0147604fb0d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2C 16300 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.