Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0d159a80f19c5bb…

MALICIOUS

PDF

41.8 KB Created: 2020-08-09 17:38:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6adaf4c3f91e04a81d55f09819a30dd8 SHA-1: d82274a638fb42091caf9823b04ecc92c7054f55 SHA-256: c0d159a80f19c5bba769e2f7ff4a8b8c79db308e504ac138750ef1953a0893a6
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. This indicates the document's primary purpose is to lure the user into clicking a link that leads to malicious infrastructure. The document body and embedded links further support this, with a large number of links, many hosted on Shopify, likely part of a link farm to improve SEO for malicious content. No scripts were extracted from this sample.

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=cfa+level+1+curriculum+pdf+download
    • http://files.makwawamalawi.com/uploads/1/3/2/7/132740860/zuder.pdf
    • http://files.joshualively.com/uploads/1/3/1/4/131437457/5496950.pdf
    • http://kemonam.molly-boone-wed.com/uploads/1/3/0/8/130814328/bosilupi_wutazuzovutiruv.pdf
    • http://files.equityforeducators.com/uploads/1/3/1/6/131606186/napifafufivagov.pdf
    • https://cdn.shopify.com/s/files/1/0439/8841/8718/files/46563515946.pdf
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/93103185005.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/kuzugeturasisupunu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8140/8416/files/2325829021.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5461/files/lufikoweperimipuku.pdf
    • https://cdn.shopify.com/s/files/1/0434/8837/9032/files/21401648455.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/94065484152.pdf
    • https://cdn.shopify.com/s/files/1/0437/8230/7989/files/anatomy_of_liver_and_biliary_system.pdf
    • https://cdn.shopify.com/s/files/1/0439/0171/4587/files/6900569349.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/xisarovabiraxuren.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_off00006267.bin
c6723df61781a4253f8168a682f8f342e020cb9501c3126e6112235dd97de5c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6267 5232 bytes
font_01_sfnt_off0000743a.bin
5a39b4f2bd4d1745d0503a79f2c548d1e65d220067c4968971b73a097c85080a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x743A 10596 bytes

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