Malicious PDF — malware analysis report

Static analysis result for SHA-256 399351b4f187a127…

MALICIOUS

PDF

47.5 KB Created: 2020-08-25 18:28:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6346337d42ca6a9c8e966750658fa8b3 SHA-1: d484cbdc9f0604b7bc32be5d96a278374eb5e5fa SHA-256: 399351b4f187a1278719fd3259a9ed87b91c217bf6d8e7fff30510907625c966
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'https://ttraff.ru/pify?keyword=ppsspp+gold+pc+full'. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a mass of external PDF links, with 'https://cdn.shopify.com/s/files/1/0429/6137/1290/files/texogigadubu.pdf' being the first identified. The document body, though heavily obfuscated, contains these URLs, suggesting the primary goal is to redirect users to potentially malicious content or phishing sites through a link farm.

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.ru/pify?keyword=ppsspp+gold+pc+full
    • http://vedomute.santamonicaquiltguild.org/uploads/1/3/1/4/131483254/9884774.pdf
    • http://files.naturebajuicebar.com/uploads/1/3/0/7/130776567/4699531.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/texogigadubu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/24337586301.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/47720677757.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/movoxebaraxovomogilegizok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tuwupijisunuxavupo.pdf
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/tamil_news_paper_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/86667678964.pdf
    • https://cdn.shopify.com/s/files/1/0437/9174/5175/files/bootstrap_form_center_div.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/62432962239.pdf
    • https://cdn.shopify.com/s/files/1/0432/5202/3458/files/45677428973.pdf
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/lds_articles_of_faith.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072c4.bin
9d7a195f46923d3484c4c5fcabcb016cf6516c2fd8ba7090675030a5a60c5b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C4 2984 bytes
font_01_sfnt_off00007d6c.bin
f002978aef038076ca762c27fe11d349660bfbc9bbe1d817eb169ab1205afa14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6C 5016 bytes
font_02_sfnt_off00008e8c.bin
ed96d583e5914989657f44c03eafa4dcd8dd95e24896f2779be1283262a75390		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8C 10192 bytes

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