Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca3b5beaa7b52cff…

MALICIOUS

PDF

44.4 KB Created: 2020-08-10 17:11:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ba9da59f7fc32260ce258331d41fa4b SHA-1: 0eac31ab52e9b2b4188d6bbb7cb44f4f347fd23f SHA-256: ca3b5beaa7b52cffa68e58182e3402ad397f6db2eb89a28c25cf9f0f0f28b71f
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=anatomie+systeme+digestif+pdf'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign Shopify links but one points to a potentially malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to redirect the user to this malicious site.

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=anatomie+systeme+digestif+pdf
    • http://files.americanredcrosskadena.com/uploads/1/3/0/8/130815095/zefuf-segajeze.pdf
    • http://files.yourkentuckydj.com/uploads/1/3/1/3/131379833/5315810.pdf
    • http://files.boquetenewcomers.com/uploads/1/3/2/7/132710632/8239630.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/power_of_attorney_colorado.pdf
    • https://cdn.shopify.com/s/files/1/0435/1728/0408/files/94472671133.pdf
    • https://cdn.shopify.com/s/files/1/0437/2371/8805/files/ccat_test_grade_3_free_sample_questions.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5947/files/39586731243.pdf
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/how_to_open._gz_file.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/holographic_universe_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/8962/3208/files/29490002609.pdf
    • https://cdn.shopify.com/s/files/1/0430/9663/7597/files/consumer_behaviour_definition.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0811/files/lugolixedowulavu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/xitubepukibozotazova.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4665/files/xokovev.pdf
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/48502575888.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_off00006af3.bin
a2009a000c3e72341a700f34d7b8b4dc6b02421be5d2f1870aa37b70054c29c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF3 5324 bytes
font_01_sfnt_off00007d0e.bin
de5eddf34208006b1594076017089d76dcea3731634ba7b7d3224f7247c49903		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0E 12304 bytes

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