Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cbd19dbd326b020…

MALICIOUS

PDF

47.9 KB Created: 2020-09-02 13:26:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70af526b2eac825bb4e27d8f9e77cb76 SHA-1: 2b5fd910e571fa97dc9d12d5e841a482cf90423a SHA-256: 8cbd19dbd326b0201af1b095810e36c9b7c0f507af3bd51cd8428a4cbc39f0ac
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to a URL that is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains text related to free templates and the malicious URL, suggesting a lure. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing 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.link/wix?keyword=free+template+web+company+profile+bootstrap
    • https://static.usrfiles.com/ugd/b8c837_43e3d64818224ac5b1e3f2e38b3bbd34.pdf
    • https://static.usrfiles.com/ugd/afe78f_03ecdb2f8fe6407fb37565e013b0a117.pdf
    • https://static.usrfiles.com/ugd/cc14e4_b710964ea86149c491439964c1853d17.pdf
    • https://static.usrfiles.com/ugd/bcfc12_199167dea028486fb0ac3fef6e3d249e.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gikari.pdf
    • https://cdn.shopify.com/s/files/1/0435/6997/1363/files/manual_affinity_photo_ipad_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/fesimulufomurenakarikud.pdf
    • https://cdn.shopify.com/s/files/1/0433/8840/3862/files/sql_server_2012_express_edition_free.pdf
    • https://static.usrfiles.com/ugd/7e6083_2259b9f5ce5c4e60b7153549397fcdaf.pdf
    • https://static.usrfiles.com/ugd/a01749_37b37985414b4e4b86f2e24a664da92a.pdf
    • https://static.usrfiles.com/ugd/493135_e27f1d37582343ad88ae3d2c9ea8893a.pdf
    • https://static.usrfiles.com/ugd/aaaf79_950c920c61e944748531b7f012167295.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_off00006eac.bin
1899243bdd9b407747aafdf925c0a5d21ccf3f261fac05fb6d2fe45fbf2cc479		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAC 5236 bytes
font_01_sfnt_off0000806d.bin
3f9f939c4495cd84a1864327c5213b6eb2f15b3ae36e977642fc5e7ba1f9f729		 pdf-font-stream PDF embedded font (sfnt) at offset 0x806D 10604 bytes
font_02_sfnt_off0000a46e.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA46E 4324 bytes

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