Malicious PDF — malware analysis report

Static analysis result for SHA-256 c274f3f2e20a8026…

MALICIOUS

PDF

59.0 KB Created: 2020-08-22 06:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01a326876f1a3f02e05d4b1627aa2be0 SHA-1: 2107110471d288ea6690f5b21d8080cefaa324cf SHA-256: c274f3f2e20a802677162483f59406826caddcd74a1f2d7884dcb9558a4bd78d
150 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One of the primary links directs to a known malicious redirector, ttraff.cc, with a keyword suggesting a review of 'Android one os'. The presence of a malicious redirector and the mass linking strategy strongly indicate a phishing or scam attempt designed to lead users to malicious content. No scripts were extracted from this sample.

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=android+one+os+review
    • http://files.deltasculling.org/uploads/1/3/0/7/130738955/botizin_buvexab_nekuburoz_jitiverefekuve.pdf
    • http://lawuxad.liveforliteracy.com/uploads/1/3/1/4/131453459/vojikopimivupo.pdf
    • http://files.simply-scripted.com/uploads/1/3/0/7/130775228/4064420.pdf
    • http://tibapopox.crevecoeurworkspace.com/uploads/1/3/1/4/131453329/5624557.pdf
    • https://cdn.shopify.com/s/files/1/0435/5280/0929/files/sbi_personal_loan_form_16_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/3305/9737/files/32560245947.pdf
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/vekejigobide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30899714004.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/93772861526.pdf
    • https://cdn.shopify.com/s/files/1/0438/5275/9200/files/mifanujo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8128/5286/files/68578809242.pdf
    • https://cdn.shopify.com/s/files/1/0434/6154/2054/files/sap_business_objects_web_intelligence.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/tekonsha_prodigy_p3_trailer_brake_controller_manual.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_off0000ab7d.bin
004776f0ed58d1cf2a8f79074bf77b65e966a4bb1f05932143d8be30feba9aad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB7D 4716 bytes
font_01_sfnt_off0000bba8.bin
50d6044a7f29f643944e3ff6e1beb96f12fef10059aee7801d30afbfd75b301a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA8 10364 bytes

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