Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a1efe7cdcf47569…

MALICIOUS

PDF

46.5 KB Created: 2020-08-14 15:00:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8eeed8739115aeec41da0ad1d5b35d0a SHA-1: 6259ec80a1479cf1ded365d37ada24e2e83527a7 SHA-256: 1a1efe7cdcf475694592f063f77627ee8119fd0f785bf7b3f0db2ab52457e17d
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=netwrix+account+lockout+tool'. The document body, though heavily obfuscated, contains text fragments suggesting it is disguised as a 'Netwrix account lockout tool'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to improve search engine ranking for 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.ru/pify?keyword=netwrix+account+lockout+tool
    • http://wefafa.amsbandandchoir.com/uploads/1/3/1/4/131408999/xuvalujexalinupowomo.pdf
    • http://files.heikecoffee.com/uploads/1/3/2/6/132695465/e03604557506.pdf
    • http://files.katyschutte.co.uk/uploads/1/3/1/4/131452836/xupejujaloxomajegiva.pdf
    • https://cdn.shopify.com/s/files/1/0431/6089/5650/files/fofewavizelobelu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2461/2508/files/sap_accounting_software_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/pinivegumamogikoba.pdf
    • https://cdn.shopify.com/s/files/1/0435/7927/7467/files/reilly_ace_of_spies.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4741/files/mevefegotanezoxawipep.pdf
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/17808218719.pdf
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/27150606360.pdf
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/19171220369.pdf
    • https://cdn.shopify.com/s/files/1/0438/0593/3730/files/60005868063.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/rasupus.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1780/files/sigedejaxul.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/loxul.pdf
    • https://cdn.shopify.com/s/files/1/0435/2753/6799/files/fijozinu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/hemostasis_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0434/2104/0792/files/lagikisojip.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_off00006a09.bin
4fd7a7a9c8ddda575bccfd896d4fe095a9c14e86ff89b90b1de157e943062296
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A09 4692 bytes
font_01_sfnt_off00007a15.bin
2cdea6af5844af07fb95e7b8e0a222c29f82c13f583eb664befea532af6c7170
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A15 10652 bytes
font_02_sfnt_off00009e60.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E60 4324 bytes