Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4a9ad7fb71f0e2f…

MALICIOUS

PDF

53.0 KB Created: 2020-08-07 07:50:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f4c78442446a802d984a04c8383ee48 SHA-1: 10d435f538be9a777fc42373d3b3fd0d1a7c671e SHA-256: e4a9ad7fb71f0e2f67e7fdda900dc38a3cf3325430b76673b355e8e35923d0c7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at https://ttraff.ru/pify?keyword=hannah+crafts+the+bondwoman+s+narrative+pdf. This suggests the document is designed to redirect users to malicious sites under the guise of providing access to a book.

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.ru/pify?keyword=hannah+crafts+the+bondwoman+s+narrative+pdf
    • http://files.centrelinedesigns.co.uk/uploads/1/3/0/8/130814902/317933.pdf
    • http://files.detroitorff.org/uploads/1/3/1/1/131164202/tutekagagazilebu.pdf
    • http://files.teachingcello.com/uploads/1/3/0/7/130775934/3bf5c.pdf
    • http://files.southernalbertabowhuntersassociation.com/uploads/1/3/2/6/132695428/40e6b0.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0432/1312/7835/files/82796634670.pdf
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/trastornos_alimenticios_concepto.pdf
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/musunep.pdf
    • https://cdn.shopify.com/s/files/1/0439/8376/5662/files/56601474531.pdf
    • https://cdn.shopify.com/s/files/1/0431/2704/6301/files/30776362559.pdf
    • https://cdn.shopify.com/s/files/1/0431/1593/7948/files/72963773735.pdf
    • https://cdn.shopify.com/s/files/1/0433/3230/5054/files/kujozuxopuxevux.pdf
    • https://cdn.shopify.com/s/files/1/0431/8396/4324/files/gefaxepufigozufufuvi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/bawuridefile.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/67689958011.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/good_rules_for_a_discord_server.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_off00009046.bin
7e1132edee671953fa94887cd98898b0deff6c3f31420855f6eb3b65ae0ba546		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9046 5616 bytes
font_01_sfnt_off0000a34c.bin
df52fe21349d1144806ce8ea91a4895067a6ed7c10b6f5a4473890c2107a63ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA34C 10352 bytes

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