Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6f12707e9e4961…

MALICIOUS

PDF

43.9 KB Created: 2020-09-18 19:06:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8956f57405837098c4b67070a1322a2 SHA-1: 665d29b26f76fc8fb027827dc8b0f7056f5052d9 SHA-256: ce6f12707e9e49617a4535a1292bca0f0adbf067a84a195cff2b29b7665eff16
152 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection strategy. One prominent link, 'https://ttraff.link/wix?keyword=dymo+labelwriter+400+turbo+troubleshooting', is identified as a malicious redirector. The document body, though partially corrupted, also contains this URL, indicating a lure to trick users into clicking malicious links. 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.link/wix?keyword=dymo+labelwriter+400+turbo+troubleshooting
    • https://c9e86069-f689-4e30-b6e2-787d1128a0ab.filesusr.com/ugd/536122_46bf0d489cca466982a3e60df5670fb4.pdf?index=true
    • https://cd9abb8d-fa6e-4e00-b9ea-235635ba2324.filesusr.com/ugd/a42eed_23bb799cadb5473bb323e14b4771f8b7.pdf?index=true
    • https://1a6cc8d4-454f-4f86-ae2f-acf68af45e1f.filesusr.com/ugd/7ef0dc_c75a4429f537451b86606721eeb37d1e.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0430/7245/4810/files/vawevasotepa.pdf
    • https://cdn.shopify.com/s/files/1/0440/9029/4437/files/gofasituzoraket.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5772/files/canonical_transformation_hamiltonian_example.pdf
    • https://cdn.shopify.com/s/files/1/0436/2511/9904/files/financial_reports_in_healthcare.pdf
    • https://f4dc1460-713c-4bdb-9093-38b32a53aab1.filesusr.com/ugd/ebbcbd_954df68bbc1d40269d2f5e353bdd38a3.pdf?index=true
    • https://373e353f-18a3-4df3-b281-3b06c70ea9a6.filesusr.com/ugd/39a0fd_db3bbded79404150b80aec0902e770a5.pdf?index=true
    • https://e9feda95-5ae0-4291-904a-d769cbd2229f.filesusr.com/ugd/fbcb80_5b01676b1c6f431997cefc971f4aef3a.pdf?index=true
    • https://9e84057c-0e1f-40d7-a7b3-d5eff7de91aa.filesusr.com/ugd/c63bf9_1b4bc994295d449d83107d8e0859aa1c.pdf?index=true
    • https://dfceb2a0-54e8-4756-bf9a-18fcc3cc0648.filesusr.com/ugd/7d2910_ea81a2269db346eca9d8faa251d95f2e.pdf?index=true
    • https://c0f0c30b-6c6d-485d-8486-8bec4a6cad0b.filesusr.com/ugd/03ef8e_7761d08747e44801a694c3d5dd82e3d0.pdf?index=true
    • https://597868f8-5cce-4092-b445-5b55016070bb.filesusr.com/ugd/a4d998_e849b88554704ba88d8da12d129d0827.pdf?index=true
    • https://9cda30a1-fd17-41bd-8398-35825f4ed8fe.filesusr.com/ugd/ab63e3_77b5e88e6b13426381d3b7e99f052ddf.pdf?index=true
    • https://e9911e15-b544-4ad3-b6e1-5ebe56edb686.filesusr.com/ugd/ea5d7b_9682821b027f4b24a28b2e8cfdd28538.pdf?index=true
    • https://7e577183-479a-4cfd-a71f-dde55dc2aa30.filesusr.com/ugd/f9d4cd_f059ad92f8564e42aabf0687985888dd.pdf?index=true
    • 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/
    • https://e9911e15-b544-4ad3-b6e1-5ebe56edb686.filesusr.com/ugd/ea5d7b_968282

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ae0.bin
fe96e33f1dc3eea97c27753bd1770e7263e126eeb0cf6667e9729125da549980		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE0 5664 bytes
font_01_sfnt_off00007e19.bin
2273295315695dfa109e2efc330a04eb7fee81c032050b3f7022ef185713fc28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E19 10824 bytes

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