Malicious PDF — malware analysis report

Static analysis result for SHA-256 57d1723c43ce0ac0…

MALICIOUS

PDF

40.0 KB Created: 2020-08-30 08:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1475a4aed0048665cd8e1be92457b6c SHA-1: 1c9962baf86069b1d51d965bf0a592e376dae567 SHA-256: 57d1723c43ce0ac0f158057fb7152e5d45e70631057b5b2526bc8ad18a12984f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This URL is used in a lure to download 'the peaceful pill handbook'. The document also contains a PDF link farm heuristic, indicating it hosts numerous other PDFs on Shopify. The ML classifier strongly flagged this PDF as malicious.

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/wix?keyword=the+peaceful+pill+handbook+free+download
    • https://cdn.shopify.com/s/files/1/0429/4931/2665/files/applied_heterogeneous_catalysis.pdf
    • https://cdn.shopify.com/s/files/1/0438/1458/4477/files/poverty_of_historicism_popper.pdf
    • https://cdn.shopify.com/s/files/1/0431/0056/9753/files/92873846265.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/circuit_board_symbols.pdf
    • https://cdn.shopify.com/s/files/1/0450/3034/2806/files/libros_de_mario_benedetti_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/situjuvoporafonetelu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4310/2618/files/fepujukinipurulijuvilax.pdf
    • https://cdn.shopify.com/s/files/1/0437/8696/1045/files/3503066494.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1016/files/79705908377.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6582/files/unicellular_and_multicellular_organisms_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/bilingual_children_s_books.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/tanubib.pdf
    • https://cdn.shopify.com/s/files/1/0457/7692/8924/files/chutti_tv_doravin_payanam_tamil_song.pdf
    • https://static.usrfiles.com/ugd/b8c837_4aa50fe820d14e128736a2324d81e37f.pdf
    • https://static.usrfiles.com/ugd/cac9e4_c12027ca14de4dd19f5c3161d9119bb5.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/
    • https://cdn.shopify.com/s/files/1/0437/8696/1045/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e52.bin
19942e8170f45de9e8caf79c2cd8c660a0d1728f0785fbd249d52eb9af23d3ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E52 5308 bytes
font_01_sfnt_off00007063.bin
cd54ee3c11b7c3e44ca53afcfdc42c5f91f14c28d53d2c96c507ed17a9bbe9e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7063 10012 bytes

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