Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd5165f69cd9a8a…

MALICIOUS

PDF

49.5 KB Created: 2020-08-12 06:51:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90ba1b2129bb8ce8f34c7ac19d298c54 SHA-1: f5aa0eb090f7a1f903ef7d800e08b535dba25441 SHA-256: ffd5165f69cd9a8aa5f45a6ee1a906b015ba84fb0695b33e6c3e34f374e83cdb
160 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of these links, however, redirects to a known malicious domain (ttraff.cc). The presence of a password-protected archive lure heuristic suggests this PDF is intended to trick the user into downloading a password-protected file, likely containing a malicious payload. The document body itself is heavily obfuscated and contains the malicious redirector URL.

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=que+es+una+historia+clinica+psicologica+pdf
    • http://files.macmamusic.com/uploads/1/3/0/8/130814043/c045a5caf05c5.pdf
    • http://jofabefov.daysinnepal.com/uploads/1/3/1/6/131606354/3179332.pdf
    • http://files.lynbrookels.com/uploads/1/3/0/7/130775354/xivupenozu.pdf
    • http://files.merrymeetingartscenter.org/uploads/1/3/0/7/130775232/tejorojubogugoto.pdf
    • https://cdn.shopify.com/s/files/1/0428/7548/6367/files/97910356034.pdf
    • https://cdn.shopify.com/s/files/1/0431/2042/7157/files/97909280800.pdf
    • https://cdn.shopify.com/s/files/1/0428/3010/2694/files/california_dreaming_chords.pdf
    • https://cdn.shopify.com/s/files/1/0436/1424/0931/files/bcs_result_2020_40th.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/33396670459.pdf
    • https://cdn.shopify.com/s/files/1/0431/0319/1194/files/77887950628.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/13426694503.pdf
    • https://cdn.shopify.com/s/files/1/0436/8115/3177/files/project_on_alternating_current_for_class_12.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/82306679633.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/32371969717.pdf
    • https://cdn.shopify.com/s/files/1/0436/4196/2649/files/67301400700.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/addition_and_subtraction_worksheets_grade_6.pdf
    • https://cdn.shopify.com/s/files/1/0436/3531/0752/files/27790540468.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/
    • https://cdn.shopify.com/s/files/1/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008049.bin
c126dbe165fed82fc396e212c093a73d6e084fbc15d59fe1021514649168676b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8049 5480 bytes
font_01_sfnt_off000092e0.bin
12f6a66adf73616d40184d8df7d19fba808b5454c1b0875bacbd281e02f00afa
pdf-font-stream PDF embedded font (sfnt) at offset 0x92E0 11020 bytes