Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b6b9dd585e273ed…

MALICIOUS

PDF

52.0 KB Created: 2020-08-08 12:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00295b61411a644d3fe1016f6aa007df SHA-1: 17513009e8795b8904d4f85a09df1d292594ec1e SHA-256: 1b6b9dd585e273edfc51d30b9a0c0a9ccb4c13ac2e79ee53bff86b58e84b4f90
150 Risk Score

Malware Insights

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

The PDF file contains a link farm, directing users to numerous external PDF files, with one primary link pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to entrepreneurship and the malicious URL. This indicates a social engineering attempt to lure users to potentially malicious content.

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.ru/pify?keyword=25+common+characteristics+of+successful+entrepreneurs+pdf
    • http://files.dconleyphotography.com/uploads/1/3/1/8/131856353/fewefix.pdf
    • http://files.mmrcfoundation.org/uploads/1/3/0/7/130738704/xudejonevik.pdf
    • http://files.farm-freshorganics.com/uploads/1/3/0/7/130775263/kebulita_ribitilaratit_kaloxelawela_tonifinenodi.pdf
    • http://files.thesummittgroupllc.com/uploads/1/3/1/6/131637137/dudelijomima-batumamupe.pdf
    • http://mufame.fromoureyes.com/uploads/1/3/1/4/131453850/sifupo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9618/5763/files/kabijakezefidudax.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/jabipexesiv.pdf
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/setilodowafovabikeziwun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5227/7670/files/92100462320.pdf
    • https://cdn.shopify.com/s/files/1/0440/6129/4757/files/87087624923.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/83455380709.pdf
    • https://cdn.shopify.com/s/files/1/0438/0455/7472/files/lenegenujafukaronag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/91201844961.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/83060172161.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.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_off00008bee.bin
b977a1ab77de7c2fc4b9a0101a6f206deb9eee517569ea7575dc6e3e70ad9f4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEE 5556 bytes
font_01_sfnt_off00009eae.bin
90a3e03879a225be8ff5658cbed90b604d488b8d9467856cf7462d1ed2fff740		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EAE 10568 bytes

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