Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5a1a1b3abe73efb…

MALICIOUS

PDF

44.6 KB Created: 2020-08-29 12:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d717c4d335b37a1649eb96c3fb26df3 SHA-1: 2e330927efa105dec3e1f025e1b42a890cad150b SHA-256: e5a1a1b3abe73efbba541c3a19e3db035cb96a3e173e2fc706cd6462d458c7b7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, many of which point to a redirector URL. The document body text, though heavily obfuscated, contains the string 'Receptionist answering phone calls script' and a URL that appears to be the initial lure. The primary malicious URL identified is https://ttraff.com/wix?keyword=receptionist+answering+phone+calls+script, which is likely used to redirect the user to a secondary malicious payload. No scripts were extracted from this sample.

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.com/wix?keyword=receptionist+answering+phone+calls+script
    • https://static.usrfiles.com/ugd/b8c837_9b9270f295854ca2850a45c6260834a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a632ee9836d48e6bec1a7a2dcf40888.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc58c533a3854ec8a080083273e8b5db.pdf
    • https://static.usrfiles.com/ugd/b8c837_ddc0630f1c2343548252af4e0678ed85.pdf
    • https://static.usrfiles.com/ugd/b8c837_a07fc6a5c9944264849d48f7df5bd6ee.pdf
    • https://static.usrfiles.com/ugd/b8c837_09714c9640e64a18a20a9b21644430a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_3544602e03e64af2b92d58f3b9961831.pdf
    • https://cdn.shopify.com/s/files/1/0428/6418/1404/files/aidin_salih_son_sz_1_indir.pdf
    • https://cdn.shopify.com/s/files/1/0440/6679/9766/files/game_calling_all_mixels.pdf
    • https://cdn.shopify.com/s/files/1/0430/6049/4485/files/.pdf
    • https://cdn.shopify.com/s/files/1/0436/0998/1085/files/92623712193.pdf
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/90401958486.pdf
    • https://cdn.shopify.com/s/files/1/0434/2553/0005/files/90816117650.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_off00005f95.bin
2dc564c32c7480a03f70e042d8f60ea1729db53b186b38b0c0b0714bf8d75fdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F95 5080 bytes
font_01_sfnt_off000070dc.bin
52e609514844682931fdb5a9e057648a996312fd32363b25ebbf2f12ce346375		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70DC 12036 bytes
font_02_sfnt_off00009751.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9751 4324 bytes

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