Malicious PDF — malware analysis report

Static analysis result for SHA-256 682bd1e96958c7be…

MALICIOUS

PDF

36.4 KB Created: 2020-08-30 13:22:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9e5466ef507669c84af151d70c3e0da SHA-1: db20954da1e204cb98e2a1ba27e4fc92fbcda846 SHA-256: 682bd1e96958c7be47545ec1323c3824d099c211c48f33d5915dffd9d9c5b40b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which, https://ttraff.com/wix?keyword=the+world+is+yours+tattoo, is identified as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous external PDF links, suggesting an attempt to distribute malicious content or engage in SEO manipulation. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=the+world+is+yours+tattoo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/3782/6973/files/84965838963.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/gewabivodobakate.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/tajonavizitixezinavo.pdf
    • https://static.usrfiles.com/ugd/b8c837_abcf35407fab42aab17ac4e20d9a7c69.pdf
    • https://static.usrfiles.com/ugd/0047a4_2b4577e870464bc68caef6de3ebc93cd.pdf
    • https://static.usrfiles.com/ugd/d902bb_939a19bd5e764ea08d4bdf695853a830.pdf
    • https://static.usrfiles.com/ugd/576447_8bf3e07cb1d143b18df08c4378919c41.pdf
    • https://static.usrfiles.com/ugd/b8c837_c07078fac9d04a0caddf1b60a8167997.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd13ff5138ca4761afb1914a49b64fe9.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0fc3ebefc6d468abcf5a8a2e0acd464.pdf
    • https://static.usrfiles.com/ugd/bdeb4c_e805fd4e259b46b395c90bef85c9e1bb.pdf
    • https://static.usrfiles.com/ugd/5899d5_271f51012f4d4097a6fb5ec9827d837d.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046f9.bin
5c171a72d4d6e973d8efc6a9fb9d49c5ff292bf7cc26732fd760f87451a6028f
pdf-font-stream PDF embedded font (sfnt) at offset 0x46F9 4832 bytes
font_01_sfnt_off0000578a.bin
f4744c729bba13422c8a68cbd8fd2ca45598bd55fb5f9362333afbfc11b29a7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x578A 9176 bytes
font_02_sfnt_off000076c5.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x76C5 4324 bytes