Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cee16eca0212330…

MALICIOUS

PDF

41.7 KB Created: 2020-08-28 00:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00d24a3877423e17d879a7279fa375d3 SHA-1: c4bc10a77948d3944f3d1181ff7d975c6fb958d5 SHA-256: 9cee16eca02123308ae4db3b517b021ab255abc8b5d55477c609533e00fb77d6
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 for containing malicious redirector links and a link farm. The embedded URL points to a redirector, and the document body contains numerous links, including one to a known malicious redirector and many to Shopify-hosted PDFs. This suggests a tactic to lure users to malicious sites or for SEO manipulation.

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.link/pify?keyword=hellgate+london+blademaster+build
    • http://files.boob-ology.co.uk/uploads/1/3/2/3/132303374/vinewagejar-kubojaba-rajezutiwugudow-vifiwejapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/dms._vizio_link.pdf
    • https://cdn.shopify.com/s/files/1/0436/1024/3230/files/quiznos_catering_menu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/saritifogezunorifejixev.pdf
    • https://cdn.shopify.com/s/files/1/0429/7195/5353/files/fubejok.pdf
    • https://cdn.shopify.com/s/files/1/0437/4324/8545/files/17785974729.pdf
    • https://cdn.shopify.com/s/files/1/0439/7131/3822/files/kajebuvinafibekubirigafij.pdf
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/10770550396.pdf
    • https://cdn.shopify.com/s/files/1/0428/4612/6247/files/nijutakogetoti.pdf
    • https://cdn.shopify.com/s/files/1/0433/9446/5948/files/divisibility_worksheets_for_3_9_6.pdf
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/salidixiwonudotini.pdf
    • https://cdn.shopify.com/s/files/1/0429/1703/6198/files/pdf_file_editor_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0459/5902/0703/files/ms_sql_database_sample.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/jasuxepofaropax.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_off00006504.bin
598d452dc4656b2350ca764c52a3fd0d475c39d401a16dbba1fe903380106a3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6504 5248 bytes
font_01_sfnt_off000076bc.bin
92ab3deccf326558cc46446fb40a3ffa3557eae5f53191f46fb0f30fc3762cf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76BC 10380 bytes

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