Malicious PDF — malware analysis report

Static analysis result for SHA-256 5709dafecc5358ad…

MALICIOUS

PDF

39.9 KB Created: 2020-08-12 21:05:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58d40c468ec00d2bfcf4c7d6c0f7693b SHA-1: 0a85b2954b604673ad92d79fdf317bb5e3be0f8f SHA-256: 5709dafecc5358adacbb43ecc74c09d1f874f65d5148db052511117e560247c7
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 external PDF files hosted on various domains, including a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=agroforestry+project+pdf', which is flagged as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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=agroforestry+project+pdf
    • http://files.dsmfunko.com/uploads/1/3/1/4/131482937/tigobigofuramulanaw.pdf
    • http://files.rustedacresoaps.com/uploads/1/3/0/7/130739651/c69467c9af039.pdf
    • http://sugajix.innyoutybrollie.com/uploads/1/3/1/3/131380845/df37d7f606d95c.pdf
    • https://cdn.shopify.com/s/files/1/0429/9620/3679/files/goxudel.pdf
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/nexuxefidasosadu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4442/0246/files/98548347146.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4555/files/wuriwutilibumolitawazo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/93959491289.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/70252841611.pdf
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/9782805016.pdf
    • https://cdn.shopify.com/s/files/1/0431/2881/5783/files/best_entrepreneur_books.pdf
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/lonmin_bursary_application_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/6661/2119/files/19348216573.pdf
    • https://cdn.shopify.com/s/files/1/0433/7703/3372/files/approaches_to_psychology_glassman_6th_edition.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_off00005ee0.bin
4525fc19d476c17bc3c6eefce58e478159d56c10811f29ac052988f5aeb12079		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE0 5248 bytes
font_01_sfnt_off000070e5.bin
b4dc95e4caa041781fe423f6981fe95ca82fe4db5a319747caf1549874ccfcca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E5 10008 bytes

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