Malicious PDF — malware analysis report

Static analysis result for SHA-256 4946c915392fc5f1…

MALICIOUS

PDF

47.0 KB Created: 2020-08-05 01:29:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 495a0fa9a5bb22db183b412484da76fb SHA-1: 982d093fdaf48ca571f9d5d6e54c8ddbd59083fd SHA-256: 4946c915392fc5f13a9ad32e1956c9498f4aa966341e63a4b5c68509cb7dfe55
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes the text 'Ascaris suum in pigs pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of multiple shopify.com links indicates a link farm strategy to obscure the malicious destination.

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.com/pify?keyword=ascaris+suum+in+pigs+pdf
    • http://files.clinicalambassador.com/uploads/1/3/1/4/131438397/6549405.pdf
    • http://files.michellestartzmanmetalwork.com/uploads/1/3/0/9/130969306/diwodi.pdf
    • http://files.okaykosmetics.ca/uploads/1/3/1/8/131856166/sisokez.pdf
    • http://zitijini.senbukankarate.com/uploads/1/3/1/4/131483337/welabos.pdf
    • https://cdn.shopify.com/s/files/1/0430/9745/6801/files/15699158916.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/gixiworitufepokitonurer.pdf
    • https://cdn.shopify.com/s/files/1/0431/7075/8820/files/15765557678.pdf
    • https://cdn.shopify.com/s/files/1/0435/3005/9940/files/bujagezubirapuveba.pdf
    • https://cdn.shopify.com/s/files/1/0430/9549/0721/files/gukomajexukatesuxuvoxikin.pdf
    • https://cdn.shopify.com/s/files/1/0432/3917/8399/files/ccna_100_125.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/pet_smart_coupons.pdf
    • https://cdn.shopify.com/s/files/1/0438/0760/4896/files/vixefopujive.pdf
    • https://cdn.shopify.com/s/files/1/0430/3031/5159/files/76708158472.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/tigusezabanapavixi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0681/9493/files/93801692405.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/kontakt_5_keygen.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_off00007a42.bin
90dbb35557830d9e20f3dac226ac1e446b2245b5e46ab181055cb336a370f273		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A42 5432 bytes
font_01_sfnt_off00008caa.bin
802c8dca341d56e0e33c04b01aaf31ca2918ff760d0bf240c3ae4adb88f38134		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAA 10104 bytes

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