Malicious PDF — malware analysis report

Static analysis result for SHA-256 5044893f13c49cde…

MALICIOUS

PDF

64.4 KB Created: 2020-08-13 21:26:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89a289350b069398812e1683fbd22f6a SHA-1: e7ee7dc37633a402561a8eedd9655fcc9d92d94c SHA-256: 5044893f13c49cde9a863b80434882396e81f5cb0aa57e4a7dfd9063bd92b32e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=casio+ef+558+user+manual'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. The primary intent appears to be directing users to malicious infrastructure.

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=casio+ef+558+user+manual
    • http://nedodi.canyonhighlibrary.com/uploads/1/3/1/4/131453284/35bb999cb.pdf
    • http://wabozuwa.estc.org.uk/uploads/1/3/2/6/132682587/felukoxefegaw.pdf
    • http://files.growwithmehomechildcare.com/uploads/1/3/1/4/131406744/finigan_xaputovatixabi_fiwexo.pdf
    • http://files.conniewesley.com/uploads/1/3/0/7/130738850/4938824.pdf
    • http://files.mymonarchs.com/uploads/1/3/2/6/132695571/2510303.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/download_pdf_eraser_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0440/0067/3950/files/pod1_centrify_com.pdf
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/hewlett_packard_dv4.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonixalekena.pdf
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/34321549955.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nebedaxogatasimilore.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1507/files/27290700805.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/nilumopimamasupa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/93794160551.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/55731914648.pdf
    • https://cdn.shopify.com/s/files/1/0433/4744/3865/files/muvedanotopaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/sekaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/71744967358.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009ecb.bin
5d53bb52bbad0c9c2a945120f3815651915eca8e4a0c41f7163aaf4756ad3149
pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECB 1584 bytes
font_01_sfnt_off0000a6d3.bin
953afb76e1cc95fac837fb49b610f29fdae351e70bdcde11f236de30d4a9ff75
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D3 5136 bytes
font_02_sfnt_off0000b82e.bin
f4c8c2e42b5bc77242d96ed19720ad37c23d9daba902e0e62b3220fbc34c42ee
pdf-font-stream PDF embedded font (sfnt) at offset 0xB82E 19892 bytes