Malicious PDF — malware analysis report

Static analysis result for SHA-256 825c410e0634745d…

MALICIOUS

PDF

42.0 KB Created: 2020-08-30 02:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54ab35cdd5445adbb645f0f2103b4de8 SHA-1: c0ec6902b4caeac02396285bd883711a9110a803 SHA-256: 825c410e0634745d2afa7d60f8c22ca43737c969ffa07e8f3d6e09de1f46ba1a
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with a significant number of embedded URLs. One URL, 'https://ttraff.com/wix?keyword=planeaciones+para+segundo+de+preesco', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL, suggesting it is the primary lure. The presence of numerous links, including the malicious redirector, indicates an attempt to lead the user to a compromised or malicious site.

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.com/wix?keyword=planeaciones+para+segundo+de+preesco
    • https://static.usrfiles.com/ugd/b8c837_b333c4d086224df4b36d7181bd313ca5.pdf
    • https://static.usrfiles.com/ugd/d2cc1f_1763a61ba7f242cdbc5592be7092e604.pdf
    • https://static.usrfiles.com/ugd/76156b_23b59cb6c23f426ea85a8bfab61c7dac.pdf
    • https://static.usrfiles.com/ugd/e33828_39489248f8564d1ca9d71d30d1b2df16.pdf
    • https://static.usrfiles.com/ugd/cc14e4_d9cfb0995b51446ebd036d77ba6b0c66.pdf
    • https://cdn.shopify.com/s/files/1/0437/8532/2658/files/gosim.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/52848729414.pdf
    • https://cdn.shopify.com/s/files/1/0433/6638/3770/files/nisagowuxavitovefe.pdf
    • https://cdn.shopify.com/s/files/1/0464/4995/0888/files/camera_lens_test_chart.pdf
    • https://cdn.shopify.com/s/files/1/0436/2531/6514/files/aulad_ki_tarbiyat_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2979/7787/files/guardrail_design_guidelines.pdf
    • https://static.usrfiles.com/ugd/b8c837_c888e8bd03584673869bf0b0a5d6cd2f.pdf
    • https://static.usrfiles.com/ugd/b7ed05_9af12544d941411ab19a809773021dec.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_912d6257333c41e29f4d0577317d636a.pdf
    • https://static.usrfiles.com/ugd/41a0b6_7d0a8a13cdf84657b1d99eaf4907f99f.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_off00006585.bin
66fd6c2e6bcfbab11831959687e858d8b33b2caf10800b41ecb9a8dc2fb55725		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6585 5244 bytes
font_01_sfnt_off00007759.bin
a7ad61d57959deb3118b4ebc0c72761fb596f84c4c3750e138ef522f10e6ab2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7759 11044 bytes

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