Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ce0888e3391eba…

MALICIOUS

PDF

53.3 KB Created: 2020-07-25 02:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8521daaa436b7f09aee4d213f824735 SHA-1: e5465d335f0127262ffede3e9772a2fdc9d521be SHA-256: d5ce0888e3391eba06942ae8e35248f5cbcd31e2baed1b46dd564e376192e36d
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's content is designed to trick users into installing software or extensions. The presence of numerous external links, including a link farm, suggests an attempt to drive traffic to potentially malicious sites or to manipulate search engine results. No scripts were extracted from this sample.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=cds+syllabus+pdf+free
    • http://files.flooringnetwork.com/uploads/1/3/2/6/132695586/rezakofove_nujikanu_dimekitujovo_lukinogef.pdf
    • http://files.trailer-trash.com/uploads/1/3/2/6/132681545/nowawagegido.pdf
    • http://files.foxxfitnessprogram.com/uploads/1/3/1/4/131452741/zesexuj.pdf
    • http://files.rushizle.com/uploads/1/3/1/3/131384663/1747408.pdf
    • http://files.vcaec.org/uploads/1/3/1/8/131858287/141951.pdf
    • https://cdn.shopify.com/s/files/1/0433/1608/4891/files/61857708139.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/rakokitif.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/pavat.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/rexekivukunemi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78539107281.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/62079825973.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/sabiwupupiriwudu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3638/5181/files/74182408495.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/jarusukefarodulip.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/13834199233.pdf
    • https://cdn.shopify.com/s/files/1/0433/3325/5323/files/dovuligiri.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/botif.pdf
    • https://cdn.shopify.com/s/files/1/0433/6497/4742/files/kobisoxaruxijebanikimofi.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_off0000898b.bin
cb4068d86efa1a85eed0a6c4d85bd216877601e1caf6a1caab05efbb40f866dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x898B 4840 bytes
font_01_sfnt_off00009a13.bin
fa5bb35cd187c2c0e600d2320050f57b35fb840d3c9aed0bd66cecc2f75c2579
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A13 14864 bytes