Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07c05bf41635c1c…

MALICIOUS

PDF

48.0 KB Created: 2020-09-09 01:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a341ae383c1798e8a5ac5651f65dec2 SHA-1: 511fa811a8fe2ed2f861b2f08e9ddc95194c71e4 SHA-256: d07c05bf41635c1c6a3118bb2234e89edad47c58046927a95c8204d0821edf0b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the embedded URLs, 'https://ttraff.club/wix?keyword=good+food+guide+2018+south+australia', is flagged as a known malicious redirector. The document body itself is heavily obfuscated but contains references to this URL and other Shopify-hosted PDF files, suggesting a link farm or content stuffing strategy to manipulate search results and lure victims.

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=good+food+guide+2018+south+australia
    • https://cdn.shopify.com/s/files/1/0428/2269/7126/files/antepartum_haemorrhage_green-_top_guideline_no._63.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/2.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/81446158297.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/tojoduzisek.pdf
    • https://static.usrfiles.com/ugd/384ea4_8c91ea567b044ad1abe31d534389e242.pdf
    • https://static.usrfiles.com/ugd/964009_77d314f367a443cb9c91889d83550e27.pdf
    • https://static.usrfiles.com/ugd/b0cd75_f6e5efb63da34761a3119f05253ab9f2.pdf
    • https://static.usrfiles.com/ugd/8b97dd_1c32e8c18a564add80e32db583a0d1b7.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sopituwoxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/dezalabefivoduxupanaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/6395/7914/files/apprendre_l_allemand_a1.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5669/files/50607636565.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0675/files/3_4_inch_thick_plexiglass_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/jubexonamix.pdf
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/98220722931.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_off00007b24.bin
812791ad6d34458703d80741c46719c559b4f5875246dc00845e4e6f0d9861d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B24 5720 bytes
font_01_sfnt_off00008ea3.bin
a438e2097321c14b18841b2b7e486e0875a400486327ef5868e41159237510ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA3 10600 bytes

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