Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c54ebe09cab108…

MALICIOUS

PDF

43.1 KB Created: 2020-08-15 01:49:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a7fa48e2333485c7abde5544fc72195 SHA-1: 1fefd8a8c85bce9261286435ce195d525caa6ec1 SHA-256: e7c54ebe09cab1085013485cafcc1ec514e9322dfcb1c0c799506918a2edd9e7
162 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical link pointing to a known malicious redirector. The document body, though obfuscated, contains URLs that are part of this link farm. The presence of a 'Password-protected archive lure' heuristic suggests that the linked content may require a password, a common tactic to bypass security scanning. The primary attack pattern involves redirecting the user to malicious infrastructure via the embedded link.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=guided+access+on+macbook+pro
    • http://files.archid.net/uploads/1/3/0/9/130969656/risuzixinu_verunesejok_nadevepepevuloj.pdf
    • http://files.deyrecreativedesignsexpressions.com/uploads/1/3/0/8/130874012/fudalobamibu.pdf
    • http://files.wayneswindow.com/uploads/1/3/0/8/130814297/nukilipiwegopup.pdf
    • http://xifeseb.jenniferdanahart.ca/uploads/1/3/0/9/130969940/soboliviresebojotu.pdf
    • http://files.lazarlab.org/uploads/1/3/1/6/131636845/ribejax.pdf
    • https://cdn.shopify.com/s/files/1/0435/6761/2065/files/quiz_nested_numbers_6-_10.pdf
    • https://cdn.shopify.com/s/files/1/0431/4274/2167/files/80536748187.pdf
    • https://cdn.shopify.com/s/files/1/0431/0922/0501/files/wazitinamedegoduluzeka.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/95275302993.pdf
    • https://cdn.shopify.com/s/files/1/0432/7666/4998/files/honda_generator_repair_manual_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/2009/7448/files/42481260945.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/zarevozopav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xoperesotojazi.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/ascendance_trilogy_book_1.pdf
    • https://cdn.shopify.com/s/files/1/0433/9010/7815/files/project_management_flight_plan_template.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_off00006a6b.bin
d199111dfe41b33fe0fc8b8a7600be2347fe0c93340c382883d89ad254d763e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6B 5420 bytes
font_01_sfnt_off00007cbe.bin
f24b7b0b10a02aae238b670b3f6cc3ed7366aeed04d97a74e406f2694c919168
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBE 10296 bytes