Malicious PDF — malware analysis report

Static analysis result for SHA-256 46723978c45db808…

MALICIOUS

PDF

40.1 KB Created: 2020-08-30 06:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bce649d8e363d1d2e5367cae125e2b6 SHA-1: 7da1089e5eda606b979fdd5f9f31ecf07d6529ab SHA-256: 46723978c45db808fb4547b8c2d4b3cfa10f42304dcc9a563469aac184310a73
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=oracle+corporation+universal+serial', which is flagged as malicious. The presence of a link farm further suggests an attempt to distribute malicious content or traffic.

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.ru/wix?keyword=oracle+corporation+universal+serial
    • https://static.usrfiles.com/ugd/b8c837_8bc87731a82d48708873da3b9bc1b9ed.pdf
    • https://static.usrfiles.com/ugd/837d34_abd5d419e798444e8a77928afcd5791b.pdf
    • https://static.usrfiles.com/ugd/d54300_534b3812c4d3403f8fd8481ddb59814c.pdf
    • https://static.usrfiles.com/ugd/daca0d_77dac1494f8f46429edcc1cac969dd94.pdf
    • https://static.usrfiles.com/ugd/a59130_b9f8d803ff134e168db2f09ef27d9f6b.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/alif_novel_episode_5_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4039/8750/files/72975395605.pdf
    • https://cdn.shopify.com/s/files/1/0431/9716/9824/files/51932440764.pdf
    • https://static.usrfiles.com/ugd/de60da_6bc80f5d39c6445c967b3c075dfd0d71.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c9dc17f58ea457fae53f3754bd9556e.pdf
    • https://static.usrfiles.com/ugd/bf650e_c1ef464094434787a49dba509339c44c.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_48b1e02526674b79bd99f1b6d081ed59.pdf
    • https://static.usrfiles.com/ugd/b8c837_de1340f1607743f594209bed08f197e5.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_off0000595a.bin
7f9c039be067208a80c521a95d925108efc6dbdaeea1222771ea1bc274fa5097		 pdf-font-stream PDF embedded font (sfnt) at offset 0x595A 5012 bytes
font_01_sfnt_off00006a73.bin
df327ab4b547704ca4d41813059e1efadb3a8c6c691b32c2512f4108cc84f8fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A73 13080 bytes

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