Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec950b1198cd5881…

MALICIOUS

PDF

42.6 KB Created: 2020-08-06 21:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b486f6ac6d48aefc1f90a4c532d3c49 SHA-1: 8130da3ad4129031e61b0747b870c264754265aa SHA-256: ec950b1198cd58816d970fd058f5fafce52ace2dcfc5cc6c65698a5712f8f699
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, including a critical redirector link to 'https://ttraff.ru/pify?keyword=hand+cutting+tools+pdf'. This indicates a link farm or redirection strategy designed 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=hand+cutting+tools+pdf
    • http://files.tidewatersoaring.org/uploads/1/3/1/4/131437834/1683387.pdf
    • http://bozajapor.woodsboropto.com/uploads/1/3/1/4/131407227/mazoko.pdf
    • http://files.valleygraceevents.net/uploads/1/3/0/9/130969505/siwavetizov.pdf
    • http://files.firstresponseland.com/uploads/1/3/0/7/130739778/timete.pdf
    • http://files.gracemankato.com/uploads/1/3/0/7/130776265/fopojuzaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdf
    • https://cdn.shopify.com/s/files/1/0431/8956/7650/files/mibajobisosajaselovuwaxik.pdf
    • https://cdn.shopify.com/s/files/1/0453/9963/8184/files/asthma_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0429/3450/1535/files/novel_bimasakti_menari.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/95575378026.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/pubarixafat.pdf
    • https://cdn.shopify.com/s/files/1/0433/6333/6350/files/wolenis.pdf
    • https://cdn.shopify.com/s/files/1/0433/8447/1710/files/12353560426.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/star_wars_roleplaying_game.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75904593322.pdf
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/views_from_the_6_drake_zip.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_off00006a5b.bin
ec939858dd713e7a0131e55263033a8c91953b879c54e5592745e6fa4bc1b5ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5B 5188 bytes
font_01_sfnt_off00007c17.bin
d8b0442c47bbc1e023ed1256a9de0b4b6347f11de9969d3120581568c5d378ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C17 10116 bytes

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