Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc7709140385fc5…

MALICIOUS

PDF

42.5 KB Created: 2020-08-01 20:53:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c227f7882aa96f5e25afaa720cd1e70b SHA-1: 5cd5598983adca73b09e6c161b4d6a7b7cd1c3bf SHA-256: 3bc7709140385fc5ba4d79ec45e56799f25998df2cd338240a4b6035e43dcbae
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The document body contains the URL https://ttraff.cc/pify?keyword=unearthed+arcana+pdf, which is a known malicious redirector. The presence of numerous external links, many hosted on Shopify, suggests an attempt to distribute malicious content or phish users by obscuring the true destination through a chain of redirects.

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.cc/pify?keyword=unearthed+arcana+pdf
    • http://files.robotinvestmentcalculator.com/uploads/1/3/1/8/131856071/nurimo.pdf
    • http://files.youngsupholstery.com/uploads/1/3/1/6/131607575/3910055.pdf
    • http://files.guadalupeschool.com/uploads/1/3/1/4/131483138/jurimesekijazusovag.pdf
    • http://files.glomom.org/uploads/1/3/0/7/130775304/39872e05d.pdf
    • http://files.capturingk9.com/uploads/1/3/1/4/131437312/mufagisubuzu-walejam-kuzekikinomu.pdf
    • https://cdn.shopify.com/s/files/1/0438/5102/2501/files/sibetuwoleso.pdf
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/87691745039.pdf
    • https://cdn.shopify.com/s/files/1/0434/4817/2710/files/glados_voice_generator.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/55941198538.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5137558887.pdf
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/91039346706.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/kuwonobafomugifoxabubowem.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/razoxowiwovijizizipodek.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/riwaremalisiwomegakejajuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/30148828189.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_off000069e5.bin
3ae663ea2cd5c67f00b6e72af541000790f754cfc4df4f59632fc141231892be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E5 5024 bytes
font_01_sfnt_off00007afd.bin
3b628a567a131b0a135c2e0d37fd59659afe5d889960cabde476531d7a38542e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFD 10100 bytes

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