Malicious PDF — malware analysis report

Static analysis result for SHA-256 addd7f0c5a49046f…

MALICIOUS

PDF

42.6 KB Created: 2020-08-11 13:56:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e040c0f3c40e50e79410a521b39195e SHA-1: 0e25da3810d19b58be668dc28fa58a62cd0f5c73 SHA-256: addd7f0c5a49046fe035912b63afbf7bc746aad573e6e24b0a33c996c53c6ada
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to further malicious content. The document body also contains numerous links to external PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. The ML classifier strongly indicates maliciousness.

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.cc/pify?keyword=group+counseling+skills+and+techniques+pdf
    • http://files.praisenyc.com/uploads/1/3/2/3/132302732/ad19df6df4c.pdf
    • http://files.purelyinbound.com/uploads/1/3/1/4/131411688/putigez_gunidil_mupopokovijojim_fimenureduw.pdf
    • http://files.washingtonprogressgroup.com/uploads/1/3/1/6/131606198/tefofis.pdf
    • http://files.kauaialohawed.com/uploads/1/3/0/8/130874652/1059021.pdf
    • http://pojikedur.bhameconsoc.com/uploads/1/3/2/6/132681482/sutipafatozoxigo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/vabakizesexelozixoxe.pdf
    • https://cdn.shopify.com/s/files/1/0440/2610/1925/files/gavevetotexapep.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7641/files/agile_methodology_steps.pdf
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/xusilajuse.pdf
    • https://cdn.shopify.com/s/files/1/0431/2504/7463/files/91806685140.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0469/files/novena_de_aguinaldos_para_nios.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/givuretofujoduxavewix.pdf
    • https://cdn.shopify.com/s/files/1/0437/2276/8535/files/jazogizelakafime.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/69063131924.pdf
    • https://cdn.shopify.com/s/files/1/0434/9578/4600/files/jevipoderogusemafojinum.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0983/files/24487239779.pdf
    • https://cdn.shopify.com/s/files/1/0433/9607/1589/files/rubezuze.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_off0000672b.bin
46b0947bd99023671628f4665ed77f9fe5d43c32f7fd757bf410637e5f4a906d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x672B 5640 bytes
font_01_sfnt_off00007a50.bin
1dfd1fab22d565e6f362164c6252d7941fc8cb8af7745c80d974f62e6ec5ebba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A50 10344 bytes

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