Malicious PDF — malware analysis report

Static analysis result for SHA-256 33725d4a292e2e8e…

MALICIOUS

PDF

42.2 KB Created: 2020-09-01 10:59:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d3912fc5c966557de4eed8d20bff453 SHA-1: 005c3c80844658bfe9fbfb65fcbcfb79f8a36220 SHA-256: 33725d4a292e2e8e92d73525a414224de7b4de709d6ab7b12cc2e2b4696f110e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.me). The document body contains obfuscated text and a URL that appears to be part of the lure. The presence of numerous links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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.me/wix?keyword=the+beatles+1+album+mega
    • https://cdn.shopify.com/s/files/1/0428/9105/1164/files/transparency_hex_code.pdf
    • https://cdn.shopify.com/s/files/1/0428/5205/7244/files/32069163187.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/agency_relationship.pdf
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/99792403359.pdf
    • https://cdn.shopify.com/s/files/1/0472/3091/0629/files/lijizepi.pdf
    • https://static.usrfiles.com/ugd/ce14f3_0394b448c17e4a0da0423b3494e2f8e0.pdf
    • https://static.usrfiles.com/ugd/822ecd_b73db08ccd954761bb087643fcfbcaad.pdf
    • https://static.usrfiles.com/ugd/89363e_1e0b237ee49c4c77bfa1b7b9a2aa9ba1.pdf
    • https://static.usrfiles.com/ugd/97634b_f9ed398865c845508ec7cc97d7d3c0aa.pdf
    • https://static.usrfiles.com/ugd/451461_d380b72827e6454eb2301d9547214ea3.pdf
    • https://static.usrfiles.com/ugd/32acb1_bf9b794c7c0b46c890b23669fc334234.pdf
    • https://static.usrfiles.com/ugd/45fd81_fae9333e961a4605971d97afd7bc5c84.pdf
    • https://static.usrfiles.com/ugd/f515ca_117531c619aa4dd28983ce63b2b7cc03.pdf
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/28601430464.pdf
    • https://cdn.shopify.com/s/files/1/0433/6284/4837/files/dugopolski_trigonometry_4th_edition_free.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_off00006757.bin
d08063b5ace201e366f6182df82509078f0e7ccd9d18a66897568b80fb1f73c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6757 5144 bytes
font_01_sfnt_off000078ba.bin
94eda25a6fd32ab43c9b5185707a8a95f77d22cc5e13b92ac46cb5cf8e993ed9
pdf-font-stream PDF embedded font (sfnt) at offset 0x78BA 10412 bytes