Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f641369a76b23f…

MALICIOUS

PDF

35.0 KB Created: 2020-08-30 15:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a09f1486da1ff764d4af6e6fa177e769 SHA-1: 617a15df058acec85f6977281a9b140547578518 SHA-256: 93f641369a76b23f9dae8c4cb6db077b76d53d25f47cddfa8f60157017ff3d7e
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as search results, directing users to a malicious redirector. The primary malicious URL identified is https://ttraff.club/wix?keyword=i+surrender+hillsong+chords+pdf. The document body is heavily obfuscated and contains embedded URLs, further supporting the malicious intent. No scripts were extracted from this sample.

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.club/wix?keyword=i+surrender+hillsong+chords+pdf
    • https://static.usrfiles.com/ugd/b8c837_a23303dda1464c76afcaca4c6ccba19b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0564db30819642d980ce7fa014338bad.pdf
    • https://static.usrfiles.com/ugd/89c6ad_b551720822eb4288a77265e058b94477.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_49699747c6e647cb89b34442aeb25a06.pdf
    • https://static.usrfiles.com/ugd/b56239_5a0723262c6d46069276fc50e9df9bc7.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_ab558196ab544c1bbdbd4d58054ec111.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f4337d527b0459bb485e190405982be.pdf
    • https://static.usrfiles.com/ugd/b8c837_76a275f151d0484d8f8e58e3225e0123.pdf
    • https://static.usrfiles.com/ugd/b8c837_604205606b5744b7bbbff45f4fcc0137.pdf
    • https://static.usrfiles.com/ugd/7f46b5_c51c03e8251e47729c4bd02e361f42c8.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/greenhouse_gas_emissions_factsheet_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4292/1886/files/cbse_class_10_answer_sheet_format.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/12803659551.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_off00004bab.bin
4ab72c8ea826dd596a09ea462a54f83d23e8255097455e8ec8bdf60213c03c73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BAB 5144 bytes
font_01_sfnt_off00005d1e.bin
146b23149067d68dbb6fe84e2221f6270537e3c9a01f90456a304ea6d3706aba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1E 10060 bytes

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