Malicious PDF — malware analysis report

Static analysis result for SHA-256 a73e54120c70549f…

MALICIOUS

PDF

50.3 KB Created: 2020-08-20 11:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 761bfdff2bd98bb6961f884c0a2c8744 SHA-1: 57dfe43993646e228aaef27820060e1689a5252c SHA-256: a73e54120c70549facfab3d9e4054d0b8336642c2e202ff60e105179c8b6087b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=android+studio+keyboard+shortcuts'. This URL is embedded within the document body, suggesting a social engineering lure. The document also contains a large number of external PDF links, many hosted on Shopify, which is flagged as a link farm. The primary malicious URL is the most critical IOC.

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=android+studio+keyboard+shortcuts
    • http://files.theloftviolinshop.com/uploads/1/3/0/9/130969938/gajuxoderetigiwakexu.pdf
    • http://mikejinek.picardlab.org/uploads/1/3/0/8/130814017/butove_xojekozem_lipazow.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/baldur_s_gate_ii_enhanced_edition_manual.pdf
    • https://cdn.shopify.com/s/files/1/0449/8666/3070/files/steuergesetz_basel_stadt.pdf
    • https://cdn.shopify.com/s/files/1/0438/2500/4706/files/axis_bluechip_fund_portfolio.pdf
    • https://cdn.shopify.com/s/files/1/0431/9445/0078/files/free_admin_template_for_web_applications_responsive.pdf
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/what_is_steam_client_bootstrapper.pdf
    • https://cdn.shopify.com/s/files/1/0435/5709/3525/files/blender_2._7_tutorials_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/getibuxekakatetefuxivime.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/suxuteregejo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1841/1417/files/gaxix.pdf
    • https://cdn.shopify.com/s/files/1/0433/9515/4070/files/cvs_health_pulse_oximeter_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ba8.bin
070675deb3a0c6f40f64409cf2ea6862453f44e5df02f529b6702a697e57ef0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA8 8792 bytes
font_01_sfnt_off0000880d.bin
e8472263b125eb961d5ed8bad800bd9913082b5e1ee7c2fd82d2183fc95a61c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x880D 5288 bytes
font_02_sfnt_off00009a01.bin
4ace6fa8927dbecac7c95f8940c161551d7772201bb05c327396a8306b6fdf49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A01 9980 bytes

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