Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a27bb01ff7ba01…

MALICIOUS

PDF

65.5 KB Created: 2020-08-11 23:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a94cd6d9b60f40e179ddedfc06d8c889 SHA-1: 618fb01a4cc801d3e7dce6da71fa28fad25e8080 SHA-256: d7a27bb01ff7ba01c582e024837d507fd6c87534e710e81411413b1dce2d06e5
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic firing indicates a direct link to a known malicious redirector, 'ttraff.cc', which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the same keyword as the redirector URL, reinforcing the lure. No scripts were extracted from this sample.

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.cc/wb?keyword=gravity%20wheel%20free%20energy%20generator%20pdf
    • http://files.pomphreyconsulting.com/uploads/1/3/2/3/132303407/fekefape_resinuji_kukorajamebuzi_nevixawariluvo.pdf
    • http://mebojudug.totemfoodproducts.com/uploads/1/3/1/4/131483068/tejaw.pdf
    • http://files.nanomat-conference.com/uploads/1/3/1/3/131398244/9278314.pdf
    • http://files.delavinadesignsco.com/uploads/1/3/1/4/131407530/e95cec0.pdf
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/11431815511.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4622/files/xonilosofoxamekubolalom.pdf
    • https://cdn.shopify.com/s/files/1/0446/6507/7913/files/bangalore_university_time_table_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/zegolilipekeraveto.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3970/files/furusive.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/nagabone.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/72248802640.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/69172808185.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/26560870171.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8483/files/63072041963.pdf
    • https://cdn.shopify.com/s/files/1/0432/4327/4395/files/jupamudoligasate.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.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_off0000c10d.bin
f9c62503dad3777595525a488ef084845e3ce42f3c9068e20a5ec3e911297851
pdf-font-stream PDF embedded font (sfnt) at offset 0xC10D 5408 bytes
font_01_sfnt_off0000d394.bin
df6f6c937cf35262f772d77b767e4900c2f18356f6b20e46f4c86aeddf2251a2
pdf-font-stream PDF embedded font (sfnt) at offset 0xD394 11000 bytes