Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c1306db20044c27…

MALICIOUS

PDF

42.0 KB Created: 2020-08-22 11:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d99d3e8ed99114756f8464055dbf716 SHA-1: 763157d02d2b44ab3ba39f9c000b2cdb0ef142a8 SHA-256: 7c1306db20044c27fa3c653cc5d1da779ea87586a4903ec1c8f295bf7ef7c984
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link and a PDF link farm. The document body, though heavily obfuscated, contains text suggesting a lure related to an 'Artist artwork release form' and includes the malicious URL. The primary malicious URL identified is a redirector, likely leading to further malicious content.

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/pify?keyword=artist+artwork+release+form
    • http://vubujus.vinodbharti.com/uploads/1/3/1/8/131856772/806f65d17e.pdf
    • http://nejuledo.rachaelkoolcounseling.com/uploads/1/3/0/8/130814124/fepasizodez.pdf
    • http://files.musicbianchi.com/uploads/1/3/1/8/131856331/f0567a4e.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/xaxosiji.pdf
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/vakuku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93434530871.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/sufafazaka.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6492/files/nuloxajusevudegonav.pdf
    • https://cdn.shopify.com/s/files/1/0431/6292/7253/files/54815729893.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3763/files/animals_worksheets_for_nursery.pdf
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/anthem_lights_easter_medley.pdf
    • https://cdn.shopify.com/s/files/1/0429/0723/8567/files/cash_flow_statement_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/addition_and_subtraction_with_regrouping_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0448/4136/9761/files/sample_recommendation_letter_for_scholarship.pdf
    • https://cdn.shopify.com/s/files/1/0433/1978/7675/files/80330163764.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/
    • https://cdn.shopify.com/s/files/1/04

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006641.bin
6331dff4c8501bc780c875bf308d70c80b63b7267bf651f04c73e12d2ad02122		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6641 5060 bytes
font_01_sfnt_off00007775.bin
7c67bc1dd18c63e7de64d97bf8cd092b8752aade1ba5ddc02165f9b449e6e5b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7775 10496 bytes

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