Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa14af80344adf41…

MALICIOUS

PDF

44.6 KB Created: 2020-08-07 20:40:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8703a9694d7717421aa2285dd059e647 SHA-1: 1ead814abd1203e9ea61b2867160e54ce79f682e SHA-256: aa14af80344adf410d770b27317228def17a9fecfcb0131dd11629293c5d70d9
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors, such as 'ttraff.ru'. The document body, though heavily obfuscated, contains references to 'applied optics and optical design pdf' and includes the malicious redirector URL. This suggests the document is designed to drive traffic to potentially malicious sites, likely for SEO manipulation or to deliver further malware.

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=applied+optics+and+optical+design+pdf
    • http://files.sweetaxethrow.com/uploads/1/3/1/4/131437464/6499709.pdf
    • http://files.seems.com/uploads/1/3/1/4/131455283/jitameboj_zejajegenib_gafoxilo.pdf
    • http://files.cheekycanvas.com/uploads/1/3/1/3/131382841/goregiwukogusi.pdf
    • http://files.technicalserviceprovidernetwork.org/uploads/1/3/1/4/131482886/2783992.pdf
    • http://fosarajes.stripesshop.com/uploads/1/3/2/6/132696414/sewovafeb-rutozan-felupaw-norezimifi.pdf
    • http://files.che
    • https://cdn.shopify.com/s/files/1/0434/1330/7541/files/gibeduvuzedube.pdf
    • https://cdn.shopify.com/s/files/1/0438/0635/9713/files/bijefuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/0811/5366/files/basic_linux_commands_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/8114/5243/files/47778884831.pdf
    • https://cdn.shopify.com/s/files/1/0431/2236/0481/files/thoracic_spine_strengthening_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/85420693581.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/41030328217.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/bioethics_principles_issues_and_cases_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8901/0593/files/22346690275.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/wivapipixugajinosej.pdf
    • https://cdn.shopify.com/s/files/1/0439/3720/2344/files/wutivatixo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4340/files/seragejavupopubus.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_off00007096.bin
80ef3251e5a4e790c839fc919b4d5392e6c62252e2f40d8cfeeff945d8c10e0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7096 5216 bytes
font_01_sfnt_off00008270.bin
ce5992ac443f3ea41486a85f6e16e41d8fd166782a75ced3db756a7d95982d17
pdf-font-stream PDF embedded font (sfnt) at offset 0x8270 10196 bytes