Malicious PDF — malware analysis report

Static analysis result for SHA-256 534570e0458e08c5…

MALICIOUS

PDF

47.0 KB Created: 2020-09-08 19:44:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6666e105c9e10fc9e946e887b99e1f62 SHA-1: da63b47a3df22a80d6d612e2ecf488c20e3dcc1e SHA-256: 534570e0458e08c5fc5ce6b8cc057a9524919812645e7d52fa1da535638e1f33
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.club/wix?keyword=freestyle+optium+neo+user+guide, which is likely used to redirect the user to a malicious site. The document body contains garbled text but includes the malicious URL and several benign-looking Shopify URLs, suggesting a link farm or redirection tactic.

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.club/wix?keyword=freestyle+optium+neo+user+guide
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/19897640397.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/89860916685.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/85484335363.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8903/files/anchoveta_peruana.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/bsc_physics_hons_syllabus.pdf
    • https://static.usrfiles.com/ugd/607883_73062cb62d5a4da083cffb48cee18c3b.pdf
    • https://static.usrfiles.com/ugd/97634b_405807ed9137492d99558b5a019e6ff3.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7002/files/majigaxuxuwikegujumuje.pdf
    • https://cdn.shopify.com/s/files/1/0440/7744/9366/files/galarevufumasew.pdf
    • https://cdn.shopify.com/s/files/1/0434/0970/3062/files/binunezujulimit.pdf
    • https://cdn.shopify.com/s/files/1/0440/9350/5688/files/how_do_you_use_markdown_in_discord.pdf
    • https://cdn.shopify.com/s/files/1/0437/7195/3301/files/different_approaches_to_management.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/69700813852.pdf
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/zygmunt_bauman_liquid_love.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/vadularu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/kansas_fishing_guides.pdf
    • https://cdn.shopify.com/s/files/1/0432/4347/1008/files/dovagaxawozez.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_off00006dfb.bin
447d57801180100e69d0e11f193c26077bec09d7c2df7d3ffce918979afae192
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFB 5008 bytes
font_01_sfnt_off00007ef6.bin
86130d1361be0a4efc25f55e0ae5c01f9b17496174e5e79e66300a96eb06ae89
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF6 9908 bytes
font_02_sfnt_off0000a0e2.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0E2 4324 bytes