Malicious PDF — malware analysis report

Static analysis result for SHA-256 52a1f7bda1fa0a5f…

MALICIOUS

PDF

47.4 KB Created: 2020-08-08 18:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be862a6de8f23b806e7ac8158f50ed15 SHA-1: 88945df5de93ddcb1b7c92b224ca0cb71ff91731 SHA-256: 52a1f7bda1fa0a5fe238a2863577c0f42bf7c9eba58755e19bdff033af481f06
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Link

The PDF contains a lure to install a browser extension or update, which is a common social-engineering tactic. It also hosts a large number of external PDF links, many of which point to benign content, but one critical link redirects to a known malicious infrastructure at ttraff.com. This suggests the primary goal is to redirect the user to a malicious site, likely for further exploitation or credential theft.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.com/pify?keyword=couper+un+pdf+en+plusieurs+pdf+adobe
    • http://files.te-equipment.com/uploads/1/3/1/8/131857390/xiperudozerinawuzuta.pdf
    • http://files.buttercreamlane.com/uploads/1/3/1/3/131384656/mejujofamobab-sapidowegidi.pdf
    • http://files.jonlehrerdance.com/uploads/1/3/0/7/130739601/konolif.pdf
    • http://files.glenlodgeholsteins.com/uploads/1/3/0/8/130814169/tusipokubixoze.pdf
    • https://cdn.shopify.com/s/files/1/0433/1841/1417/files/44251478804.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2470/files/45923463867.pdf
    • https://cdn.shopify.com/s/files/1/0438/2579/1133/files/d105_john_deere.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/56209969806.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5188/files/44599024974.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/miwukobesuwagutasakivur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdf
    • https://cdn.shopify.com/s/files/1/0433/8447/1710/files/77878426267.pdf
    • https://cdn.shopify.com/s/files/1/0433/9462/9788/files/97316017445.pdf
    • https://cdn.shopify.com/s/files/1/0440/7423/8102/files/46287586591.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9816/files/jutawoxusut.pdf
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/93513694004.pdf
    • https://cdn.shopify.com/s/files/1/0439/2235/8427/files/wemivogi.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_off00006bd2.bin
c06bb891d19320c22d637ccda371a006d91cfc6aa049a3977d59105ea7de7482
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD2 5000 bytes
font_01_sfnt_off00007cd5.bin
ce5dbf1f0ed580d5da0bc9e115bc6291aa88565e95729a3a61b906f676939578
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD5 11252 bytes
font_02_sfnt_off0000a098.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xA098 4324 bytes