Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3d97b977afb5c8…

MALICIOUS

PDF

47.5 KB Created: 2020-08-15 06:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b53e2d8598fd664daa4e132572332997 SHA-1: b95debc5d39dd9e68db667d935544acf8458171e SHA-256: ee3d97b977afb5c8232c4f77157e93105e41c8970c56a2f8cebb916a690a1e22
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented in the document body and is likely intended to lead the user to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous external links, many of which are to Shopify domains, potentially for SEO manipulation or to host further malicious content. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of 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=national+geographic+learning+english+pre+intermediate+pdf
    • http://xopab.scotlycan.com/uploads/1/3/0/7/130739573/3464845.pdf
    • http://wigija.thetexasclassic.com/uploads/1/3/0/9/130969754/4753744.pdf
    • http://riwegak.one2inspiredesigns.com/uploads/1/3/2/7/132740873/2d1bd9.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6177/files/81049006127.pdf
    • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/acknowledgements_examples.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/58717957301.pdf
    • https://cdn.shopify.com/s/files/1/0431/4683/8173/files/converter_em_jpg_online_gratis_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0433/7405/1493/files/kebukafegobazasazim.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/general_chemistry_the_essential_concepts.pdf
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/5367520044.pdf
    • https://cdn.shopify.com/s/files/1/0434/3876/8294/files/pulamewowuvolanur.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_off00007b53.bin
b7aac96ec6f0c15de6e549e89bc930f03c5e85f5030ee1793f4a444458abb607		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B53 5536 bytes
font_01_sfnt_off00008dfa.bin
bc8056ecc695fe708b5e644162d01a728ca0e976da582a6147a7e99c7396e01d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFA 10224 bytes

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