Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda25ac24398983f…

MALICIOUS

PDF

40.0 KB Created: 2020-08-20 11:13:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c36c1a75e252538339eae53c0360779b SHA-1: 13cc602c6630b081824b4e273f4ba17b2141c4bc SHA-256: eda25ac24398983fca5b12bb895f37a778f44ce105e5902dbcaa05a7a077695b
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for phishing and malware distribution. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.com/pify?keyword=super+activated+carbon+pdf`. Another heuristic flagged the document as a link farm, with many external PDF links, some hosted on Shopify. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL `https://ttraff.com/pify?keyword=super+activated+carbon+pdf`, reinforcing the malicious intent.

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=super+activated+carbon+pdf
    • http://xunuxoxem.humanitaseagleeye.org/uploads/1/3/1/4/131453416/3b39f1.pdf
    • http://rukow.bodkacoffee.com/uploads/1/3/0/7/130738894/d7e7f07.pdf
    • https://cdn.shopify.com/s/files/1/0463/5063/1073/files/kulovexopamodojenenubes.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/how_to_make_a_ringtone_for_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0439/3621/9291/files/43690021167.pdf
    • https://cdn.shopify.com/s/files/1/0434/4014/4534/files/reba_mcentire_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0435/4641/1160/files/brexit_deal_summary.pdf
    • https://cdn.shopify.com/s/files/1/0438/1189/7504/files/1299653807.pdf
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/vifogitafegipowixuwudiw.pdf
    • https://cdn.shopify.com/s/files/1/0448/6764/9698/files/all_yours_stranger_read_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/4225/8587/files/92910246514.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_off00005d26.bin
c5a5c2ae9867b009504fec670173ef41a814b7e599f3136deabb8626879473a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D26 5244 bytes
font_01_sfnt_off00006f0c.bin
196f1f942b1763cc460eba53d3fa4c4b45287cfd9adde88d0f0386f66870b209		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0C 10760 bytes

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