Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa4d8073f5aa708d…

MALICIOUS

PDF

40.0 KB Created: 2020-08-25 05:42:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bec1c3482fc1ece5fd54915845b3a277 SHA-1: bd17af1babbf7b8b2163d8d5e1c089013e1e7edb SHA-256: fa4d8073f5aa708d386fa8cf4d0062e5512cada06255ec5084821e177e41f83a
150 Risk Score

Malware Insights

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

The PDF contains a high density of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.cc'. This suggests a lure to a malicious site, likely for phishing or to serve further malware. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the PDF structure and embedded URLs indicate a malicious redirection attempt.

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/pify?keyword=fraction+conversion+to+decimal+chart+pdf
    • http://files.gravelmonkeys.org/uploads/1/3/1/6/131606109/rasirizaguvis.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/blood_type_o_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/fefatozeravirujibokux.pdf
    • https://cdn.shopify.com/s/files/1/0429/2388/4711/files/42541078412.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/adobe_illustrator_course.pdf
    • https://cdn.shopify.com/s/files/1/0431/4962/3462/files/free_english_grammar_exercises_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/5581/5583/files/75724596205.pdf
    • https://cdn.shopify.com/s/files/1/0430/5394/0887/files/bekurokefoje.pdf
    • https://cdn.shopify.com/s/files/1/0462/5429/3143/files/luciferase_reporter_assay_advantages.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/35356103960.pdf
    • https://cdn.shopify.com/s/files/1/0435/8720/7331/files/tavoloderumog.pdf
    • https://cdn.shopify.com/s/files/1/0437/1195/5098/files/83351885939.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6412/files/71751376773.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_off00005d22.bin
9ba44fdb6f604fc8961ec8d40eb16934f5cec4e7c0e253355cb79e762f95ff7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D22 5408 bytes
font_01_sfnt_off00006f5d.bin
1e4ca79a9909f8132a542c33b909a53d84e9ef8525016a72f62b4443d60cc05a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5D 10436 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.