Malicious PDF — malware analysis report

Static analysis result for SHA-256 55c0634ffa98611d…

MALICIOUS

PDF

45.2 KB Created: 2020-08-15 20:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06b86f26599ad80ee640f031b4178e59 SHA-1: 78e4b6622d57bdd62a403b280b57c85f46e1f039 SHA-256: 55c0634ffa98611d79aafdabfd2b1a7eac862385f9df93341b1004cfb4a3c41b
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified as 'ttraff.ru'. This suggests a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict. No scripts were extracted, limiting the analysis of specific execution behaviors.

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=believe+in+god+images
    • http://files.livebluesphotography.net/uploads/1/3/1/4/131437736/d1ee558f9.pdf
    • http://files.janenodine.com/uploads/1/3/2/6/132681634/xasofol.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0946/files/99722029522.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tedix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22700630349.pdf
    • https://cdn.shopify.com/s/files/1/0429/0831/9903/files/lowes_anniston_al.pdf
    • https://cdn.shopify.com/s/files/1/0436/9691/4600/files/9811172501.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/zelokubumixopizogiwex.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/dedejuku.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/padma_bhushan_award_winners_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/74828771034.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/repujomerevujigajexivetur.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/liste_capsules_nespresso.pdf
    • https://cdn.shopify.com/s/files/1/0431/3507/4465/files/xutimogodeni.pdf
    • https://cdn.shopify.com/s/files/1/0438/2903/5158/files/28510028267.pdf
    • https://cdn.shopify.com/s/files/1/0429/6228/8793/files/74319930855.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_off00006fa3.bin
876dccf444446654d349d41c038c4c610d28a99853c26f92117a8bc44e9286f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA3 5156 bytes
font_01_sfnt_off00008123.bin
a1fed7fc7a77df290e0769f3be9af7b4c4806b29a902e756839e986014ace751		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8123 12128 bytes

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