Malicious PDF — malware analysis report

Static analysis result for SHA-256 c74e91ca99c149c7…

MALICIOUS

PDF

43.5 KB Created: 2020-08-07 05:14:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e88d1362c2f346a00a1e321e628ce1c SHA-1: f8d57376bef70e1d2b01258d6f83ee93b69cb7fc SHA-256: c74e91ca99c149c7acc2a56119b9e87b46df78bc6c270594bf52459fc09490ce
120 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, including a critical redirector link to 'ttraff.ru'. This suggests the document is designed to lead users to malicious sites, likely for phishing or to download further malware. The document body contains garbled text but also includes the same redirector URL, reinforcing its malicious intent. No scripts were extracted, limiting the analysis of specific execution techniques.

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=como+transformar+pdf+em+dwg+no+autocad+2020
    • http://files.swlizard.com/uploads/1/3/1/1/131163833/2881799.pdf
    • http://files.plpthumanresources.org/uploads/1/3/1/6/131607866/wovobexu-wiromabenezi-vuwudesovelubem-zijewusiveroxi.pdf
    • http://files.mcnairycountytn.org/uploads/1/3/0/9/130969944/zuwolof.pdf
    • http://files.philmartin.co.uk/uploads/1/3/1/4/131412558/jalumi.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/79931424202.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/nimijisato.pdf
    • https://cdn.shopify.com/s/files/1/0445/5071/7604/files/minecraft_server_restart_command.pdf
    • https://cdn.shopify.com/s/files/1/0429/7913/1551/files/84979933565.pdf
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/departamentos_de_guatemala.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/43582143574.pdf
    • https://cdn.shopify.com/s/files/1/0440/1332/2398/files/63902815733.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovabokuvuxinapuwukiberem.pdf
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/91754513311.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/dimot.pdf
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/23692576360.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/brake_cleaner_sds.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_off0000674b.bin
f40b7950b428e90278a52000e5c754888b5f8b2feeaa2164ca7fae19750b7b1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x674B 5712 bytes
font_01_sfnt_off00007abc.bin
6c7721877deae97e6de929f2e780851e122a9dba3b7677d5fda0d60804ec88d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABC 11444 bytes

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