Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e79f39c6d6872cc…

MALICIOUS

PDF

69.2 KB Created: 2020-08-04 03:35:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5312bc3cb049815bb2fc141aea9c51ec SHA-1: 5342d058d8f9be1107907354ba33a9eafe935f68 SHA-256: 7e79f39c6d6872ccdf243a6360d670b441b0c72766a673b277ba3ae76cf14fc5
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to lure users to a malicious URL. The document body, though heavily obfuscated, contains the string 'Appetizer recipes book pdf' and the malicious URL, indicating a social engineering lure.

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/pify?keyword=appetizer+recipes+book+pdf
    • http://files.mr-stevens.com/uploads/1/3/0/7/130776864/zoxakaso.pdf
    • http://files.chefreginacooks.com/uploads/1/3/0/7/130739385/zezutitaled-bunif-lepiwapar.pdf
    • http://files.ginasbookplace.com/uploads/1/3/2/7/132712040/kuvowodulu.pdf
    • http://files.chefreginacooks.com/u
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/gipemis.pdf
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/mass_effect_3_romance_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/6041/0006/files/tuputazupikizegibuguk.pdf
    • https://cdn.shopify.com/s/files/1/0440/8947/5237/files/jedemobilarasenabumiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/nj_driver_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/vebanepo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jufozigazagapuji.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/besivi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/kewaunee_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/weruziwudenabejidomozaxad.pdf
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/mufipajovijokos.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/81104274992.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/dujag.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a313.bin
6ebed7541714709004421610b4ea2b7aaa23ef86a8df9018a139b88b5e3669a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA313 4832 bytes
font_01_sfnt_off0000b38d.bin
fd3af4f5ee512989a0a7d39c73e4a258a78da53bdb5c9fa393c7ca215ab377c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB38D 2276 bytes
font_02_sfnt_off0000bdb3.bin
5734f570ce09199a45607d56e970a4964dd6a73b663f2da9d85822d4ebf56659		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB3 10392 bytes
font_03_sfnt_off0000e160.bin
9d3dd6aa84735360e44f8c8ed21911ccf869a7c008eff467fe737f33df431195		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE160 16760 bytes
font_04_sfnt_off0000f86d.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF86D 4324 bytes

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