Malicious PDF — malware analysis report

Static analysis result for SHA-256 feca5d5a4e6532ca…

MALICIOUS

PDF

42.1 KB Created: 2020-08-13 06:09:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7d86947e026b08342e2df82d8091615 SHA-1: 792c0523290acfcd317e59cf5c18abc38125bc4b SHA-256: feca5d5a4e6532caf9ced4d2d9c02835cf6d073238ac22568ae77456e5bddcc5
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This URL is likely used to redirect users to malicious content. The document body also contains this URL, suggesting it's the primary lure. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or distributing malicious content.

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/wb?keyword=haberman%20pedagogy%20of%20poverty%20pdf
    • http://files.preciouspurebredpupz.com/uploads/1/3/2/3/132302940/2502131.pdf
    • http://files.amandatolentino.com/uploads/1/3/1/3/131383934/nakepikup_poroweju_judirugunediral.pdf
    • http://velemu.mikes-bike-shop.com/uploads/1/3/1/0/131070590/b7296750b502770.pdf
    • https://cdn.shopify.com/s/files/1/0432/9776/7592/files/vemufejube.pdf
    • https://cdn.shopify.com/s/files/1/0440/2210/4229/files/temperature_conversion_worksheet_kelvin_celsius_fahrenheit.pdf
    • https://cdn.shopify.com/s/files/1/0446/3912/5667/files/calendario_basket_serie_a_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/3879/4147/files/lenny_kravitz_setlist.pdf
    • https://cdn.shopify.com/s/files/1/0439/2668/3816/files/bojiduwumosov.pdf
    • https://cdn.shopify.com/s/files/1/0435/0921/9492/files/icao_annex_14_heliports.pdf
    • https://cdn.shopify.com/s/files/1/0429/2814/4543/files/86030261816.pdf
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/az_900t01_a_microsoft_azure_fundamentals.pdf
    • https://cdn.shopify.com/s/files/1/0450/9207/7731/files/convert_to_word_document_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/wuwukawivemuwiviro.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/apartheid_in_south_africa_facts.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/pekapimeg.pdf
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/65421260176.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0843/files/81232761144.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_off0000662c.bin
8142373dff746354d4225f1e53857aceb1b1489fa979618637f190e35dac2d52
pdf-font-stream PDF embedded font (sfnt) at offset 0x662C 5416 bytes
font_01_sfnt_off00007886.bin
f1975f3bd1d54df2b5acf7623b8eab350990ae843db3ee87116b85cb091deff2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7886 10288 bytes