Malicious PDF — malware analysis report

Static analysis result for SHA-256 a05ee284b4a00723…

MALICIOUS

PDF

41.2 KB Created: 2020-08-30 08:32:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b153c6d9477fd14b4ce5013ec3ed28f4 SHA-1: 43e776134c6e47a4a65ae3fbc0ac1a442eec95d8 SHA-256: a05ee284b4a00723a168049e3983ca1cdd447941137974cee6c7242b5dcc2632
150 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link

The PDF contains a critical heuristic firing indicating a malicious redirector link. The document body also contains the same URL, which is presented as a download for cracked software. The PDF also contains a mass external PDF link farm, likely for SEO manipulation to increase visibility of malicious content.

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.com/wix?keyword=descargar+presto+10.22+++crack+gratis
    • https://cdn.shopify.com/s/files/1/0435/5699/5233/files/diary_entry_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/3607/3366/files/18513376830.pdf
    • https://cdn.shopify.com/s/files/1/0431/8206/3777/files/xiwajofes.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/canara_bank_education_loan_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8133/files/28309911096.pdf
    • https://cdn.shopify.com/s/files/1/0432/3105/1931/files/seventh_day_adventist_shona_hymn_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/9043/4455/files/built_in_function_in_python.pdf
    • https://cdn.shopify.com/s/files/1/0435/1744/4264/files/jerefu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7539/4977/files/she_lives_in_my_lap.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/lifupagetidewatatejabevil.pdf
    • https://cdn.shopify.com/s/files/1/0440/4995/7029/files/xiriwunudinaraverebun.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/wuwovemak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdf
    • https://cdn.shopify.com/s/files/1/0437/7496/7965/files/canter_assertive_discipline.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_off00005ad3.bin
f7b31c304f05e11b5ea247ac187a44f7ea77cd2c2e6c26e635b239ce64c86a69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD3 5488 bytes
font_01_sfnt_off00006da3.bin
a835ec005f53864aadc22e499f2d8714f515a2f6badee31ef360478ee61281d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA3 13492 bytes

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