Malicious PDF — malware analysis report

Static analysis result for SHA-256 a71fcaa8d7f15f83…

MALICIOUS

PDF

53.3 KB Created: 2020-08-06 01:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4406dbea680d99ab2d90382c0795489c SHA-1: 297ac7ac34d9ad0735b71f19bfbe6342917e28f5 SHA-256: a71fcaa8d7f15f836e6a401954502cd42e6a8c4f80acbee4a935d28cb4abb3cb
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=definicion+de+valores+civicos+pdf'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to 'civic values'. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO abuse for phishing.

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.com/pify?keyword=definicion+de+valores+civicos+pdf
    • http://files.dahnmonwhittfamily.com/uploads/1/3/1/1/131164100/wubufilosim_wisexolasepig_fodig.pdf
    • http://files.koolcompanies.com/uploads/1/3/1/6/131606128/tivotamokuwivaxexig.pdf
    • http://files.westportom.com/uploads/1/3/1/3/131383323/magusetorun.pdf
    • http://files.familieshelpingfamiliessolanocounty.com/uploads/1/3/2/3/132303041/lofudevuju.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/17231781267.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/20926343643.pdf
    • https://cdn.shopify.com/s/files/1/0434/8729/7696/files/rawigowiwek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/94519945879.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/marginal_of_bivariate_normal_distribution.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9068/files/gisaner.pdf
    • https://cdn.shopify.com/s/files/1/0429/8912/5791/files/city_of_davis_recreation.pdf
    • https://cdn.shopify.com/s/files/1/0435/3818/6394/files/2d_and_3d_seismic_data_acquisition.pdf
    • https://cdn.shopify.com/s/files/1/0434/8113/7316/files/bahai_prayer_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/4105/4105/files/guxubuperegi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3028/1381/files/wow_classic_blacksmithing_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/4540494282.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_off00009317.bin
bb3509226f7560cb39d38ac1581b1acba4e0d35ef902d46f2a287f4a80b4c178		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9317 5208 bytes
font_01_sfnt_off0000a4f1.bin
44c4891394f9646e05166ae81e47b4dbee46a6a1731dda947022085940bf60e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F1 10288 bytes

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