Malicious PDF — malware analysis report

Static analysis result for SHA-256 b92d723f64dd108c…

MALICIOUS

PDF

43.1 KB Created: 2020-08-22 05:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fbd543b8f3dbbed89373f29629552be SHA-1: 89de17a145a33e047e3732b92bcbbd18f849c3ea SHA-256: b92d723f64dd108c76f4312b75ec1180daaf1c93975a0baced6ec5df759ab782
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links pointing to PDF files hosted on Shopify, indicating a link farm. One of these links, 'https://ttraff.ru/pify?keyword=broadsheet+hobart+coffee', is flagged as a known malicious redirector. The presence of this redirector suggests an attempt to direct users to malicious content or to manipulate search engine results. 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.ru/pify?keyword=broadsheet+hobart+coffee
    • http://files.boiseconcretepros.com/uploads/1/3/0/7/130739225/gudasalepuviger.pdf
    • http://files.isiswellnessbar.com/uploads/1/3/0/7/130776648/69436.pdf
    • http://files.meadowparkpto.com/uploads/1/3/1/4/131438193/fizigevopujas.pdf
    • http://files.tillamookschoolofdance.com/uploads/1/3/2/7/132740338/sufowiju_xunite_kovelaw_videjivofazij.pdf
    • https://cdn.shopify.com/s/files/1/0434/3755/5864/files/fame_i_m_gonna_live_forever.pdf
    • https://cdn.shopify.com/s/files/1/0436/2534/9283/files/27067579125.pdf
    • https://cdn.shopify.com/s/files/1/0428/9780/1375/files/70673461484.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/pepegowubelebimikekejul.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/maxodunexox.pdf
    • https://cdn.shopify.com/s/files/1/0438/0485/2386/files/mosozivunox.pdf
    • https://cdn.shopify.com/s/files/1/0429/5491/5993/files/processual_archaeology_theory.pdf
    • https://cdn.shopify.com/s/files/1/0429/7018/5879/files/duvutiji.pdf
    • https://cdn.shopify.com/s/files/1/0438/0576/9888/files/wutugutogaguv.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_off00006bbc.bin
59454ebf404198a0421ee497f5afcba9861a9f0665c44d03c355673a3d47fb06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBC 5268 bytes
font_01_sfnt_off00007d9d.bin
5884fde257f550e41e03d05567925d2c419494de3f97979bcf680fd35003d27f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9D 10024 bytes

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