Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8ec125b0e84420e…

MALICIOUS

PDF

46.3 KB Created: 2020-08-10 02:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb0b34ca0c433a09aa49572c457fe86f SHA-1: 1cf01f433124d17a9515d03d39231d7b2ad5e8c5 SHA-256: e8ec125b0e84420e24cd05aad7335f961c2db40cef4236f6dca25f2033f3601a
152 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the text 'Cfa level 2 study plan pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous links to external PDFs, many hosted on Shopify, points to a link farm used for SEO manipulation or to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=cfa+level+2+study+plan+pdf
    • http://mowanexij.assurance-realtor.com/uploads/1/3/1/3/131398020/d11e0.pdf
    • http://jixanup.camwenrich.com/uploads/1/3/0/9/130969723/9f45f641710e10.pdf
    • http://files.dorkygringo.com/uploads/1/3/1/4/131406663/gonipubixutobulutep.pdf
    • http://files.annaafhallstrom.net/uploads/1/3/2/3/132303024/bisipu-depewurowijodo.pdf
    • http://mixosa.usualumnibookstore.com/uploads/1/3/0/9/130969723/dorosufel.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/wamatozimukapokeru.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4748/files/66047441656.pdf
    • https://cdn.shopify.com/s/files/1/0428/4180/0860/files/jojukubenurufapinuna.pdf
    • https://cdn.shopify.com/s/files/1/0431/2743/9526/files/wimaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/4443/6128/files/luwuj.pdf
    • https://cdn.shopify.com/s/files/1/0438/2969/0525/files/business_studies_igcse_revision_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/3782/6973/files/4883310893.pdf
    • https://cdn.shopify.com/s/files/1/0439/3995/4856/files/amar_chitra_katha_collection.pdf
    • https://cdn.shopify.com/s/files/1/0432/0811/4340/files/ankle_brachial_pressure_index.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34530012154.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/akhand_jyoti_patrika.pdf
    • https://cdn.shopify.com/s/files/1/0451/4791/4394/files/kala_bhairava_stotram_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6001/0912/files/60409570150.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_off0000767f.bin
7c6041ad3811ef8bca0328cfff6eb34e97cdca2af0cf5632fa8ad0e2e817e879		 pdf-font-stream PDF embedded font (sfnt) at offset 0x767F 5140 bytes
font_01_sfnt_off00008822.bin
1c31044e6db287a7b9e2a08b71c567ef2ac1a284c4b33ed961d40794c6bd08c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8822 10588 bytes

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