Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccca5fecff196df4…

MALICIOUS

PDF

36.2 KB Created: 2020-08-08 15:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bf8caa6f21e6be197ba11ff1f2b832f SHA-1: f636935cba154522c78ac23ceb8224334c7fdff0 SHA-256: ccca5fecff196df45818025fb65a06a95f4ad530ee5c8ee1b4b489c52d344d71
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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many pointing to shopify.com domains, likely for SEO manipulation to increase visibility. The embedded URL in the document body also leads to the same malicious redirector.

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=mathematical+analysis+by+malik+and+arora+solutions+pdf
    • http://files.solanafronteraangeles.com/uploads/1/3/2/3/132303359/6fde9e2452b.pdf
    • http://wisuz.bpsalumnistore.org/uploads/1/3/0/8/130814229/8010782.pdf
    • http://files.ericgrantowens.com/uploads/1/3/1/4/131438439/43436.pdf
    • http://files.cubrajackpot.com/uploads/1/3/1/8/131857315/9292263.pdf
    • https://cdn.shopify.com/s/files/1/0437/6369/5770/files/11_body_systems_and_their_diseases.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/vizepabudedogufopijusaze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/81043174309.pdf
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/castellan_fundamentos_de_fisico_quimica.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23929268289.pdf
    • https://cdn.shopify.com/s/files/1/0433/8447/1710/files/2578003619.pdf
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/97706723809.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0437/2329/2822/files/78212717053.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/45493824976.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/23499512150.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0111/files/21968090313.pdf
    • https://cdn.shopify.com/s/files/1/0431/6587/6379/files/82860855223.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_off00004f93.bin
c2b2aad84aeca1b7c0dc61ded77b552658dbcdafd6de6f2ac0465321362280b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F93 5704 bytes
font_01_sfnt_off000062dc.bin
dbf83f4bd073a64793555800a1fc40f9a879d743f4f4e6a460abb485632b4541		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62DC 9584 bytes

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