Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c34f6a94ec38f3…

MALICIOUS

PDF

44.5 KB Created: 2020-08-08 20:20:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f1dd4c3fcec1c2f72baa3aedbd89eb7 SHA-1: bd2fe4a144725942f970c0fa66166da60c341bd1 SHA-256: 97c34f6a94ec38f3f548267b4ce178bbccbf576a278bf0bf154ebb90a0924dae
120 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a tactic to manipulate search engine results or distribute content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=medical+equipment+and+their+uses+pdf. 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=medical+equipment+and+their+uses+pdf
    • http://files.catchpennyshop.com/uploads/1/3/2/3/132303023/kovulabo_dozorapus_rokogivolowum.pdf
    • http://xikilo.hunterwrestling.com/uploads/1/3/2/7/132740930/zatanap.pdf
    • http://files.polarclad.com.au/uploads/1/3/1/4/131453496/nitoxerak-zofame-woputakowi.pdf
    • http://files.mdyc.com/uploads/1/3/1/3/131381518/xomajesugatomipadov.pdf
    • http://tozitif.ourbaptistheritage.org/uploads/1/3/0/7/130776208/gotutatipes-fogopeluvivav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41230052817.pdf
    • https://cdn.shopify.com/s/files/1/0434/0177/3212/files/investment_valuation.pdf
    • https://cdn.shopify.com/s/files/1/0433/6399/1717/files/97336854209.pdf
    • https://cdn.shopify.com/s/files/1/0434/7117/5846/files/xaliwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/fikigikuku.pdf
    • https://cdn.shopify.com/s/files/1/0428/8767/6063/files/57822063770.pdf
    • https://cdn.shopify.com/s/files/1/0438/8634/6408/files/48960189971.pdf
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/zikujixigabasebediliw.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/rizuvawiwebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/vuzegefetuxes.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/79498129199.pdf
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/79314905047.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/piwujovobolivedavofoj.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_off00006ead.bin
46842e5a90afe286d48a91ed64e7948a4ff305503835fd18aabf74abb2f4f056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAD 5524 bytes
font_01_sfnt_off00008153.bin
0c6e9dcf17d2268217c12a06ef4a872f87583f9c84fffdb8858ccba6b8eee557		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8153 10352 bytes

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