Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8e1d9baf3740fe0…

MALICIOUS

PDF

40.6 KB Created: 2020-08-07 21:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d488684ffda5e5bf7ef93fdc342ae9f SHA-1: 82b893d104b71f26c47df29f91912bbc8e6af840 SHA-256: b8e1d9baf3740fe09dec5e61ef72cdba2702c1d31766118ad595e9bebbf46f55
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to a link farm designed to manipulate search engine results. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=biblical+names+and+meaning+pdf', suggesting a lure to disguise malicious activity as a search result for a PDF document. No scripts were extracted, limiting the analysis of direct payload execution.

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=biblical+names+and+meaning+pdf
    • http://files.lifeforcechurch.com/uploads/1/3/1/0/131070442/fejoramup-febini-lopikirixebone-wixixowow.pdf
    • http://files.ivchapman.com/uploads/1/3/0/9/130969761/dexujasezezozujiba.pdf
    • http://files.bellamcbride.ca/uploads/1/3/0/7/130775974/8062894.pdf
    • http://files.siamdetectors.com/uploads/1/3/1/4/131482968/3686236.pdf
    • https://cdn.shopify.com/s/files/1/0433/9377/7827/files/6632846326.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/puxitevonofaximoxugisezem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/pdf_to_word_document_converter_free_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/8254/7361/files/ladujenefimu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/sarukofividumug.pdf
    • https://cdn.shopify.com/s/files/1/0438/3621/1362/files/paradise_lost_book_9_text.pdf
    • https://cdn.shopify.com/s/files/1/0437/0635/1771/files/6084741955.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0296/files/vehicle_dynamics_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/tughe_dekha_to.pdf
    • https://cdn.shopify.com/s/files/1/0433/0582/8520/files/goxefosi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3755/6889/files/missouri_market_reports.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_off000061db.bin
e03372741fd5cbd12859b0075bc070d0699e1738293be7b87a88cecd8b48801a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61DB 5568 bytes
font_01_sfnt_off000074c0.bin
8f7d80435eb50cca9945382d10b0ff8bdd70dde90e5bf5207f856db51c974ed7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C0 9696 bytes

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