Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd70908d5035027f…

MALICIOUS

PDF

40.5 KB Created: 2020-08-30 13:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a0396a63e5c7276d67623a994da6be6 SHA-1: 27777eff668673eb21b1c47f0ab858f41bc5f456 SHA-256: dd70908d5035027fd68ba65438bc6a045235b52e84b9c590a76b1481c0f41b5f
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a manual. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary URL leads to malicious infrastructure. The PDF also contains a large number of external links, identified by PDF_SEO_LINK_FARM, suggesting a link farm or SEO poisoning attempt to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/wix?keyword=mercury+marine+flat+rate+manual
    • https://static.usrfiles.com/ugd/7603ae_65f2f420d8c44d868557b4c06c6214f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_eef65faab57c451da30947b4172d077f.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d14f47df3fb483dbf36fe1f467e8e41.pdf
    • https://static.usrfiles.com/ugd/0adedf_28b2b69a207948b8ae8ff2371171e03f.pdf
    • https://static.usrfiles.com/ugd/b3bc21_cec0f7a407b24247b5b7712260bbdeb5.pdf
    • https://static.usrfiles.com/ugd/764aaa_631bcf35792943268d89f70c63aa0347.pdf
    • https://static.usrfiles.com/ugd/8cbfce_547154b47a5342fba186e4aad79a5ea0.pdf
    • https://cdn.shopify.com/s/files/1/0433/3476/2654/files/69353893140.pdf
    • https://cdn.shopify.com/s/files/1/0463/5007/4017/files/kutunizonib.pdf
    • https://cdn.shopify.com/s/files/1/0435/8550/3393/files/la_armadura_de_dios_estudio_biblico.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/7637566083.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/dimunopuzagazesomedesem.pdf
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/jedijatezekesulomopalo.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_off0000603c.bin
3b91ac7dc0bf05271a0745d08a9992d178ae57db3f953f8b80a4d78ee72bdd2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603C 4956 bytes
font_01_sfnt_off0000710d.bin
3cb4461477d95ae61e0aef236137ac0ef822c5a49f8655f9084a3788017efb20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710D 10592 bytes

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