Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec9a19d508e7daf…

MALICIOUS

PDF

41.2 KB Created: 2020-08-10 09:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b490fdedbc4d795e99d5ba8cb863e8e1 SHA-1: 52e32546541c1f5447f6b563418ebae9778e80ff SHA-256: eec9a19d508e7daf642b34742c81d465a130e16f27dca29e964ac9f67d6e3732
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm or SEO poisoning attempt. One prominent link directs to a known malicious redirector, 'ttraff.ru', suggesting the document's primary purpose is to lead users to malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=clicker+training+cat+pdf
    • http://files.blissbeauty-gourock.com/uploads/1/3/1/4/131407135/ferugoz_nalabubal_zeweko_nitavejadid.pdf
    • http://files.laurendouglin.com/uploads/1/3/1/4/131453998/zoputorufezadifaveki.pdf
    • http://makodile.goolsbygreatdanes.com/uploads/1/3/0/7/130775997/dufupes.pdf
    • http://files.i-seafilmfest.org/uploads/1/3/2/7/132740545/welilaxalod_zakipanolo_nezatow.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/womuxogo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/25357167108.pdf
    • https://cdn.shopify.com/s/files/1/0437/8319/2738/files/xusotijunavunir.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/velafuwodipogitetimirer.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/calentador_solar_solaris.pdf
    • https://cdn.shopify.com/s/files/1/0438/4194/5760/files/miguzusenezefamob.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/fudopajebufuwa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9465/4632/files/54493959992.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/zegorixivakepesup.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/50737940144.pdf
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/print_advertising_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0438/2123/6386/files/rosakojewuken.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_off00006416.bin
e20c553aff27f7880c36b971f665b68caf06daa62e4eaf8d9b2f6d446a2946de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6416 5116 bytes
font_01_sfnt_off00007591.bin
c099229cac2b7bfe2a087138ffecca719424c91352d0a9b7ee9d62a420ba2cff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7591 9924 bytes

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