Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c31dc9b596a016…

MALICIOUS

PDF

46.4 KB Created: 2020-09-19 03:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9531acafc18bfea46f03f366964df32 SHA-1: 10b789434f6b45c43b38afa9a598a9a9cddb688d SHA-256: 00c31dc9b596a016bc17d2aa0c568d26e890320addc8d7d66f579088f3bae8fa
194 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including one identified as a malicious redirector. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed to trick users into believing they are involved in a lottery or parcel delivery scam, a common tactic for advance-fee fraud. The presence of numerous links, including the malicious redirector, suggests an attempt to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=unquiet+mind+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://93de25ef-3e1c-4246-acb1-4e64503a230c.filesusr.com/ugd/12745a_e3884896052142b49c71e3a6046d09ba.pdf?index=true
    • https://36ec7ba0-2ef7-42fc-929b-279de372b8fb.filesusr.com/ugd/ee9d3f_b5e000d0d3c14cc0b90140402f6369be.pdf?index=true
    • https://98db7522-51b5-48f6-b3f3-9aee4d370d80.filesusr.com/ugd/d38238_9f4d9ff70f774212bb705f4a96c7ffc5.pdf?index=true
    • https://4af68585-a40b-4b7d-952e-0a49eddea334.filesusr.com/ugd/c12414_703a547d72f242e387db4f81a7e679e0.pdf?index=true
    • https://ae94e257-fc01-4bcb-a3a8-9b097bf6d224.filesusr.com/ugd/cbdbb6_f777448a7e244f33993a843cc2b2ebb0.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/62769821428.pdf
    • https://cdn.shopify.com/s/files/1/0437/7231/3749/files/37229637379.pdf
    • https://cdn.shopify.com/s/files/1/0432/7617/3472/files/48260512075.pdf
    • https://c502626b-85bb-42f2-8c02-ead86d082df5.filesusr.com/ugd/704f6c_dcf689f9696f4d8281faacb5478d2c46.pdf?index=true
    • https://feafe00f-0537-4c18-b62e-b48ca519deb7.filesusr.com/ugd/c1c462_309a87262999475690ee2b54c937e05d.pdf?index=true
    • https://401acc42-89d9-41ba-8517-ff66fbcfedec.filesusr.com/ugd/cf14a4_718ecbce5b7949e08ae247f368349e17.pdf?index=true
    • https://6f2e1e90-6ce5-4942-9ee1-58011b44b8e3.filesusr.com/ugd/a771bd_6e4b1319544540419ee175fb56bb665c.pdf?index=true
    • https://2e5e0ec0-4688-4170-820c-a97a3b6412d1.filesusr.com/ugd/7d21c0_2d62db54c2c242e3a6aa92fca9a38117.pdf?index=true
    • https://ab0c79f4-f687-4539-9a6f-42a80214b7fe.filesusr.com/ugd/97aff7_e2f2569d44024acc9702968a7e2ecec6.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074e4.bin
91438b1706b8ee348998162196534b08ad5975390aff788cfd6115ef8ca0955f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E4 4788 bytes
font_01_sfnt_off00008526.bin
98f94e4a7ac66f3803df4ff995d62ac1a654c00b7ccfbae947fc865ff410d98d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8526 12356 bytes

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