Malicious PDF — malware analysis report

Static analysis result for SHA-256 d35d49195f299cee…

MALICIOUS

PDF

39.6 KB Created: 2020-08-18 21:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe32df8e1b056bdec4165ff724289cae SHA-1: 08dfc6d6d04b71d8f0a2839dc50d209a7d3e4eac SHA-256: d35d49195f299ceed51f1f68bdcb4149095b409ff2a6a5b1e8f12b0aeecd1b76
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=social+issues+in+financial+reporting', suggesting a lure to a malicious site. 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.com/pify?keyword=social+issues+in+financial+reporting
    • http://boridugix.southwellu3a.com/uploads/1/3/1/4/131406379/3456816.pdf
    • http://files.beaconchurchofchristgbctx.com/uploads/1/3/0/9/130970009/5637ab.pdf
    • https://cdn.shopify.com/s/files/1/0428/4314/4355/files/project_report_on_road_accident.pdf
    • https://cdn.shopify.com/s/files/1/0437/9970/7810/files/febefiniwuxuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/rabozubu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4714/8950/files/xibufirofexiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/5920/6558/files/22380819608.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/bittersweet_symphony_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/zevugorazop.pdf
    • https://cdn.shopify.com/s/files/1/0432/8564/3420/files/koruxusivakiled.pdf
    • https://cdn.shopify.com/s/files/1/0437/8004/6997/files/65457578809.pdf
    • https://cdn.shopify.com/s/files/1/0429/8083/5482/files/cuestionario_de_estilos_de_afrontamiento.pdf
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/tuvelipobugogagizos.pdf
    • https://cdn.shopify.com/s/files/1/0431/3556/5978/files/how_to_change_font_on_discord.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5129/files/veni_creator_spiritus_sheet_music.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_off00005c65.bin
6369e49807c88994265082d68ea0cf3458ee3fce5889a1d91e679974596ddcb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C65 5288 bytes
font_01_sfnt_off00006e5e.bin
9dfb9624ed624a5c3234c39ed004f4172f988a05b5c8ded3146ec40c1383574f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5E 10340 bytes

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