Malicious PDF — malware analysis report

Static analysis result for SHA-256 e641ac96f63bd91b…

MALICIOUS

PDF

68.6 KB Created: 2020-08-15 06:20:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99a2241b4f57b1ad983cfaac99624c01 SHA-1: 726d5220bc44e69bb87ea76d8249b35eaf7aa990 SHA-256: e641ac96f63bd91bbf21e159c45ec495ebc9e5e78c8bd3411d4d15de27fad0aa
150 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 'ttraff.com'. The document body, though heavily obfuscated, contains the text 'Capabilities deck template' and the malicious URL, suggesting a lure. The PDF also contains a large number of external links, flagged as a link farm, with the primary one leading to a Shopify domain. The ML classifier strongly indicates maliciousness.

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=capabilities+deck+template
    • http://files.jlsexteriorcleaning.com/uploads/1/3/0/7/130740191/januzajumomegape.pdf
    • http://files.bvwthespot.com/uploads/1/3/1/8/131856454/6098159.pdf
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/strategic_partnership_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0437/4390/3905/files/auditoria_independente.pdf
    • https://cdn.shopify.com/s/files/1/0433/4632/9750/files/xazebujutegetediz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5271/1582/files/subop.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/85903227408.pdf
    • https://cdn.shopify.com/s/files/1/0443/6285/8652/files/anthropometry_ergonomics_and_the_design_of_work.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0515/files/madinaty_master_plan.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/11076646951.pdf
    • https://cdn.shopify.com/s/files/1/0435/1728/0408/files/16804862972.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/acromegaly_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0437/3141/9287/files/business_process_management_definition.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/advanced_metallic_materials.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9303/files/1896029429.pdf
    • https://cdn.shopify.com/s/files/1/0431/0020/9319/files/lerekofolasagipab.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_off0000d103.bin
eeb0a3f72b38e545caa1e184908cc3c20d6fbcf6e1a0407aa75eb67484741bec
pdf-font-stream PDF embedded font (sfnt) at offset 0xD103 5232 bytes
font_01_sfnt_off0000e2b3.bin
3033b459a35888afb72273a471337036692930e3a196e4092d343a1d2e8361bc
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B3 10096 bytes