Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1eff97e93864084…

MALICIOUS

PDF

38.7 KB Created: 2020-08-22 10:47:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffcffbf42bfba1ceb5e7b5986eca104d SHA-1: 78e8992f5012f18ad11dec6f561039954acfd021 SHA-256: b1eff97e9386408486c206881f41f2b3b952a1db33a33f3c1d4b657f4e3f69c8
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 a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=fly+ludovico+einaudi+piano+sheet'. The document body, though partially corrupted, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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=fly+ludovico+einaudi+piano+sheet
    • http://files.dynamicjourneystravel.com/uploads/1/3/2/6/132682934/lurotage_feritax_bonajanog_kivomi.pdf
    • https://cdn.shopify.com/s/files/1/0440/2796/9686/files/gokagozuxapo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/neretidesalefadim.pdf
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/fivilezuzej.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/aristoteles_historia_animalium.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/meputuxu.pdf
    • https://cdn.shopify.com/s/files/1/0439/3920/1192/files/boston_bruins_nesn_reporter.pdf
    • https://cdn.shopify.com/s/files/1/0433/4170/9462/files/jesepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/jadegutafob.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_off00004c7b.bin
0fd4700a4b793f46a37eb0e9dc3a72f8517472665496d55b1729f021d25389ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C7B 5180 bytes
font_01_sfnt_off00005e23.bin
a2f2091374f6300b447d363f70e0400adbcabbaf558e26bc3947b13f9133a00d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E23 15608 bytes

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