Malicious PDF — malware analysis report

Static analysis result for SHA-256 95cfef4fb98747b7…

MALICIOUS

PDF

40.5 KB Created: 2020-09-01 00:04:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 495cc6a502dbdeaf9aeff27e51925cf2 SHA-1: 1519cfe10a50e5c89e80fbc1e10001b24665193f SHA-256: 95cfef4fb98747b71b6884f19c0b3f074dc8c9fd7927e11d7389b5830569492b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body text, though heavily corrupted, contains the same keywords as the malicious URL, suggesting a lure to disguise the malicious intent. The primary malicious URL is https://ttraff.ru/wix?keyword=powerpoint+templates+project+status+report.

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=powerpoint+templates+project+status+report
    • https://cdn.shopify.com/s/files/1/0434/2494/0184/files/bas_rona_mat_whatsapp_status.pdf
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/vazepevukumoturininimiz.pdf
    • https://cdn.shopify.com/s/files/1/0441/3331/8808/files/78878694999.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/japin.pdf
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/2352761793.pdf
    • https://cdn.shopify.com/s/files/1/0430/5856/1173/files/how_many_tabs_in_excel_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5774/9917/files/kizenutaxalujak.pdf
    • https://static.usrfiles.com/ugd/0a052f_7b9dc6b2919246c49d508c88f138d35d.pdf
    • https://static.usrfiles.com/ugd/3d0627_73bc51edfb3b446d80cd1a4da0bcc70d.pdf
    • https://static.usrfiles.com/ugd/b8c837_528edf90f4e54b988b0956dccf9e278c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d238e8a2d67e4e41911288f40a2d4cc3.pdf
    • https://static.usrfiles.com/ugd/5be868_02caed0a61274d84b17c64a8b8423b42.pdf
    • https://static.usrfiles.com/ugd/d2cc1f_869c4b5d59bb4df69f2cf9d183548263.pdf
    • https://static.usrfiles.com/ugd/9e53d4_e905d0cd0ca74d2784285635310a2f73.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_off000061db.bin
466d277cb52ab27b28198f21b7b440b56c6acf088752cc68dfcedcc9dd74cd1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61DB 5248 bytes
font_01_sfnt_off000073ac.bin
fe18aa74ac965156a4b658f480dbe199b14ddc10c08dd92e9d9dede81ba3a254		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73AC 9796 bytes

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