Malicious PDF — malware analysis report

Static analysis result for SHA-256 5155ea84cf1b67d0…

MALICIOUS

PDF

44.9 KB Created: 2020-08-10 10:12:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b054e490d05d6f57ac8e16fa3e8dd3ee SHA-1: ad2ee2376c327b210d66beeff95a39185311405a SHA-256: 5155ea84cf1b67d0229384ae45e18d68530d42a5956a35a1904b343aa491bbe0
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'https://ttraff.cc/pify?keyword=l+anatomie+du+sc%25C3%25A9nario+pdf+gratuit'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The ML classifier strongly supports this assessment.

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=l+anatomie+du+sc%25C3%25A9nario+pdf+gratuit
    • http://files.thecatalystgames.com/uploads/1/3/0/9/130969809/lezonaba.pdf
    • http://files.stcfministry.com/uploads/1/3/2/6/132695576/4ffdbc45d0c.pdf
    • http://files.ellanstudios.com/uploads/1/3/1/4/131483235/delatabuteba_jovumesalegu_nujikiwozaf_dalarenemoma.pdf
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/kukuzufowomisulojik.pdf
    • https://cdn.shopify.com/s/files/1/0435/1878/7736/files/file_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/25688184542.pdf
    • https://cdn.shopify.com/s/files/1/0440/6948/6757/files/90806234501.pdf
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/60425611227.pdf
    • https://cdn.shopify.com/s/files/1/0433/0287/9387/files/java_iterate_through_hashmap.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/nibileraripukibu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1889/6038/files/50236855072.pdf
    • https://cdn.shopify.com/s/files/1/0433/3427/1126/files/kigusexokeviwubifero.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/nufizudirebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/addictions_a_banquet_in_the_grave_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/files/82917322426.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/noreviraviwowilipanavef.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_off00006cad.bin
506a198047477824835565f2e78b245e14202ee3519e5e67d45475f989f48b05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAD 5528 bytes
font_01_sfnt_off00007f1f.bin
5389a3898d7232c823c504f47db89f3c6bc2f8da97f859528c24c3e1a35d0a73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1F 12072 bytes

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