Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9eb0b991aefda24…

MALICIOUS

PDF

37.2 KB Created: 2020-08-24 21:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c00beb58463a9a86623aff43040a61e2 SHA-1: 2ad3e521e252f7e15400e2bebc81aea6e9fa04b6 SHA-256: d9eb0b991aefda242eea016530231fa4373f6c2a160b579aefbfa6af65af8c85
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a coloring PDF, aiming to trick users into clicking it. The ML classifier strongly indicates maliciousness. The primary malicious URL is ttraff.ru, which redirects to a resource related to 'alphabet coloring pdf'. Several other benign Shopify URLs are present, likely for obfuscation.

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.ru/pify?keyword=alphabet+coloring+pdf
    • http://mapofe.alcfes.com/uploads/1/3/1/6/131636665/lebemafuf-sosuwunerebobo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/volkswagen_jetta_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/7026/6273/files/1630771114.pdf
    • https://cdn.shopify.com/s/files/1/0437/7971/9317/files/80807243971.pdf
    • https://cdn.shopify.com/s/files/1/0440/4002/8325/files/6184338989.pdf
    • https://cdn.shopify.com/s/files/1/0437/6703/8106/files/warranty_deed_forms_florida.pdf
    • https://cdn.shopify.com/s/files/1/0435/7334/6463/files/misuse_of_antibiotics.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/11113951299.pdf
    • https://cdn.shopify.com/s/files/1/0463/0380/5602/files/xisigajalonawamowiloko.pdf
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/16281298447.pdf
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/bassam_tibi_islamism_and_islam.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_off00005426.bin
21614e91ef155661636006a45c951fb41abcc3bc0d9f6645ca3f1cf06f79bccd
pdf-font-stream PDF embedded font (sfnt) at offset 0x5426 5368 bytes
font_01_sfnt_off00006653.bin
4c969a861c7a24e6bf2f66f542b83169d664ee104e6306aa20389ef1b035113d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6653 10004 bytes