Malicious PDF — malware analysis report

Static analysis result for SHA-256 588d47fdece19ee7…

MALICIOUS

PDF

44.7 KB Created: 2020-07-31 11:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7027318df0b8bd0f754a73f5086b72b SHA-1: 73dfbf422927cbebd8c015fb459b12d29d67d678 SHA-256: 588d47fdece19ee7736a4b49cacb681d42994bb576e58f7b4c8676b61435b69d
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is further supported by the presence of a 'download button' lure. The document body, though heavily obfuscated, contains text related to 'capital expenditure pdf template', suggesting a lure for a business-related document. The primary malicious IOC is the ttraff.cc redirector URL, which likely leads to further malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=capital+expenditure+pdf+template
    • http://files.danielkellyfilm.com/uploads/1/3/1/1/131163666/e318ce5086688.pdf
    • http://files.buppertsfarmcsa.com/uploads/1/3/0/8/130874241/zubipadopu-zimanapeva-kuzubegudufa.pdf
    • http://files.ellewyant.com/uploads/1/3/1/8/131856539/wejefetaxovilubora.pdf
    • http://files.peter-m-acland-foundation.org/uploads/1/3/0/8/130874587/ramikunagozatep-razofo-darapi-tokogifixoke.pdf
    • http://files.sngprinting.com/uploads/1/3/0/7/130739287/kusaributejofi.pdf
    • http://files.peter-m-acland-foundation.org/uplo
    • https://cdn.shopify.com/s/files/1/0435/8874/7423/files/sepoxezogogazubafomudizum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/simufideja.pdf
    • https://cdn.shopify.com/s/files/1/0433/5920/7592/files/xowivos.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/12772196517.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/vaxasufakebutege.pdf
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/nukilano.pdf
    • https://cdn.shopify.com/s/files/1/0434/8621/6352/files/94006724463.pdf
    • https://cdn.shopify.com/s/files/1/0428/8125/3535/files/30535477699.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/dipen.pdf
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/86442100774.pdf
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/vovurebifokixububatosazij.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_off000071f2.bin
9ab2fc2553b75455e3f35e1bb46b75dd2da22b0875a33853d7c378baba40f1e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x71F2 4872 bytes
font_01_sfnt_off0000826b.bin
f927a6a6c4a8f47ee311fad974888edb7f5c2c989ccb3f67a1da770e16253ba4
pdf-font-stream PDF embedded font (sfnt) at offset 0x826B 10332 bytes