Malicious PDF — malware analysis report

Static analysis result for SHA-256 82b96a04065d0407…

MALICIOUS

PDF

43.9 KB Created: 2020-08-30 23:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4916cef0c67d2905e3300044a8efd928 SHA-1: ed4c4dd0fddfb124fdc588a79765d46b7c92837d SHA-256: 82b96a04065d0407f41f4612a3148aea4e49d5d1528c3d9be46c50bcce459792
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised as a download for 'biblical games for PC'. The PDF also contains a large number of external links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to drive traffic to the malicious URL. The document body, though heavily obfuscated, contains the same lure text and the malicious URL.

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.cc/wix?keyword=bajar+juegos+biblicos+para+pc
    • https://cdn.shopify.com/s/files/1/0435/1092/3423/files/58744088871.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/fundamentals_of_air_conditioning_and_refrigeration.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/28266325748.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40573574370.pdf
    • https://cdn.shopify.com/s/files/1/0431/9330/3204/files/danganronpa_2_present_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/6747/4087/files/90488344362.pdf
    • https://cdn.shopify.com/s/files/1/0435/1492/1114/files/33638240320.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/15535125853.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdf
    • https://cdn.shopify.com/s/files/1/0432/8433/2710/files/distrofia_canaliforme_di_heller.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/galuta.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/wixixipudarufijofivowo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/81770616992.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/
    • https://cdn.shopify.com/s/files/1/0432/8433/2710/files/distrofia_

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069c6.bin
4037caea5e5dd9ff23650341358c68496519b1e19a5cbbc39d042c028b72f4f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C6 5364 bytes
font_01_sfnt_off00007c17.bin
9f6941f1cb63924cbf83fae1979c694777aba3337230fe0cc9d20f7e5f788a24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C17 11400 bytes

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