Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac87538c7c060a2f…

MALICIOUS

PDF

64.8 KB Created: 2020-08-14 12:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4248efeda18dfcaa6642fb01213f0d2f SHA-1: 28cb82d9b4800fb6f0de2e2b43a7a0af853b473f SHA-256: ac87538c7c060a2f82e82a4d58496298c5aa5a9fc091d6bbd9e941619e36df80
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=symbiotic+plants+pictures+with+names+and+information'. This URL is presented within the document's body text, disguised as information about symbiotic plants. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting PDF files. The primary malicious intent appears to be redirecting users to potentially harmful content via the ttraff.cc domain.

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/pify?keyword=symbiotic+plants+pictures+with+names+and+information
    • http://zibalizi.thrivewell-being.com/uploads/1/3/0/7/130775918/vexus.pdf
    • http://files.breathethroughthis.com/uploads/1/3/1/4/131452806/ed9d24.pdf
    • http://files.pioneervalleykennelclub.com/uploads/1/3/0/8/130814101/tikodokewido.pdf
    • http://kutojigew.totalcheerperformance.com/uploads/1/3/1/4/131405927/bafarado-fixapumugijinev-lupakudopem.pdf
    • https://cdn.shopify.com/s/files/1/0436/1669/8530/files/nonujowa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0507/files/93525232286.pdf
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/59492691016.pdf
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/passion_translation_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/1369/1799/files/zimazuximikesamaxapu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0211/6772/files/fedunusajoperimapanim.pdf
    • https://cdn.shopify.com/s/files/1/0440/8151/2613/files/67851674760.pdf
    • https://cdn.shopify.com/s/files/1/0450/3299/7022/files/more_agile_testing_lisa_crispin.pdf
    • https://cdn.shopify.com/s/files/1/0434/4247/1064/files/nokusenodawibezegoteb.pdf
    • https://cdn.shopify.com/s/files/1/0440/5785/4102/files/catia_v6_tutorial_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0434/6308/2146/files/diagramm_erstellen_programm.pdf
    • https://cdn.shopify.com/s/files/1/0440/0254/1726/files/fosexilozimo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/59917526036.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_off0000ba1d.bin
0c45a37f0231eeb526cc2715a1923a984d19e877d36f8a35999bb7d498b7976f
pdf-font-stream PDF embedded font (sfnt) at offset 0xBA1D 5832 bytes
font_01_sfnt_off0000cdd3.bin
1410f5ed870b80b23fccd87796da7a9aabb6d55201a4ec130cd92fd6f46fe45c
pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD3 11768 bytes