Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b488d625844b20…

MALICIOUS

PDF

42.3 KB Created: 2020-08-30 21:52:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63d1da02ea40f14b973483840822c394 SHA-1: d3d7dd96a7f986236184cd61bd81156dfa1fe1a3 SHA-256: a0b488d625844b20f69e776250eaf3c9226ee51f9be815768b0ca25a2432a672
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, which points to `https://ttraff.cc/wix?keyword=applied+behavior+analysis+cooper+pdf`. The document body also contains this URL and numerous other links to PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary malicious link is likely intended to lead the user to a malicious site or download further malware.

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=applied+behavior+analysis+cooper+pdf
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/desumit.pdf
    • https://cdn.shopify.com/s/files/1/0434/1130/8696/files/navozufuvojokujerowo.pdf
    • https://cdn.shopify.com/s/files/1/0461/6250/9987/files/48268063550.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/bus_ticket_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/2871/6440/files/cause_and_effect_paragraph_sample.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kovogosiwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/alkylation_of_amines.pdf
    • https://cdn.shopify.com/s/files/1/0434/3853/8908/files/miwiwogobaneragubu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/19301167299.pdf
    • https://static.usrfiles.com/ugd/cbdbb6_acf19ff196fe4c03a3d1f8da729d289b.pdf
    • https://static.usrfiles.com/ugd/22739b_d9d8460d1ae5449fafb09616a23abc57.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5f625c377d245b1b696cb30dbd315c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_81e9a96334a448a7875120ca777d5510.pdf
    • https://static.usrfiles.com/ugd/d43733_c6c7582a6a564cd7a5b2c257a9bfd91f.pdf
    • https://static.usrfiles.com/ugd/d54300_07aea694ddc84fb7afafc305c4f2e49d.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_off0000656d.bin
a851f304bb761ca0b5079faf6d7254b39c335d942d49dff7577f2251e082136a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x656D 5536 bytes
font_01_sfnt_off00007838.bin
c55847531e04b4875df2f2690f2e11c679409f33246402e517af99960d932021		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7838 11056 bytes

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