Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a4ba7464f726cf0…

MALICIOUS

PDF

43.4 KB Created: 2020-08-23 10:06:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b44b40d3aa59c05a96baf7b44be2537 SHA-1: fb38cae6e4a1d008f8453c7caf543736ab066909 SHA-256: 2a4ba7464f726cf08e311fee300fb61b650c285c8405589fccdd1e7150192daf
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link to 'https://ttraff.ru/pify?keyword=assamese+dj+remix+songs'. This indicates the document's primary purpose is to redirect users to potentially harmful sites. The presence of numerous links, many hosted on cdn.shopify.com, suggests an attempt to obscure the malicious destination or leverage legitimate platforms for distribution. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.ru/pify?keyword=assamese+dj+remix+songs
    • http://files.comfort365hvac.com/uploads/1/3/1/6/131607163/4806117.pdf
    • http://diwopov.minorcanmayhem.com/uploads/1/3/1/3/131381428/574c75310d0a5.pdf
    • http://files.texasbestbrushes.com/uploads/1/3/2/7/132740519/mosuvurixaluzojonud.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/sintomas_de_la_anemia_falciforme_wikipedia.pdf
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/letubefepetagumefije.pdf
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/fomukogupe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/15828201624.pdf
    • https://cdn.shopify.com/s/files/1/0434/5715/1129/files/html_center_text.pdf
    • https://cdn.shopify.com/s/files/1/0439/1793/4747/files/sigolugijutotumizajo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2163/files/elementary_stats_triola.pdf
    • https://cdn.shopify.com/s/files/1/0443/8127/4278/files/the_rocking_horse_winner_summary.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/
    • https://cdn.shopify.com/s/files/1/0443/8127/4278/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005234.bin
1b7756d90cc49cb1da4092445fbcdd6b50ef3341ff0b97de543b6cf86a4cf68e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5234 5248 bytes
font_01_sfnt_off000063fe.bin
5459b13ddee59ab165ac40040b5c8df7caeccbaa48ce67854f789d3f93a840cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FE 13856 bytes
font_02_sfnt_off00008fa7.bin
df0d3063ba15a5f1f1c872829c737c39a88a0fd684b5df2e3dc6392ec70e7f36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA7 4684 bytes

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