Malicious PDF — malware analysis report

Static analysis result for SHA-256 96cd2caf06bb3048…

MALICIOUS

PDF

39.3 KB Created: 2020-08-25 00:20:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a4f066365fc710fc8b683e336121d99 SHA-1: 23a2a67471cc4acc1118a409b24ce067329b7a67 SHA-256: 96cd2caf06bb30488686cdc4c8dfbe9955a333915cdf15037eb822f4db30fd86
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. Crucially, one of the embedded URLs, 'https://ttraff.com/pify?keyword=chapman+maquinas+eletricas+pdf', is identified as a malicious redirector. This indicates an attempt to lure users to malicious infrastructure. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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=chapman+maquinas+eletricas+pdf
    • http://files.createeducate.com/uploads/1/3/0/8/130814605/jenonezoxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7634/4225/files/tamil_movie_video_songs_hdvidz.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/13220298338.pdf
    • https://cdn.shopify.com/s/files/1/0430/3277/2757/files/filemaker_server_16_installation_and_configuration_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/depusulolunifanilux.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/83044897457.pdf
    • https://cdn.shopify.com/s/files/1/0436/4229/0336/files/52948185253.pdf
    • https://cdn.shopify.com/s/files/1/0440/3340/9174/files/marigold_english_book_class_2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/pimuwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/caprine_arthritis_encephalitis.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4396/files/les_alphas__imprimer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4504/files/64081910936.pdf
    • https://cdn.shopify.com/s/files/1/0438/0911/2226/files/43930739018.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/janalamasa.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_off000059c5.bin
0fc35b389056444aff940546e95cf2d4bec26ccedff234bddbcb31a13b83f6aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59C5 5428 bytes
font_01_sfnt_off00006c0d.bin
97fb4fed444874e6507d5f3ddf92774a25752863a7331a8046fb4ef4bf1f8d3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0D 10900 bytes

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