Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa6b68f8916417dc…

MALICIOUS

PDF

53.5 KB Created: 2020-08-14 04:16:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b2db8e72054ddebe211877d560f0d59 SHA-1: b75105afa5d242834a7c5fea23cc626e790cfca8 SHA-256: fa6b68f8916417dc8da71b9fa07acc363eb85b4b7cf5ad9f94ed9b57eee3e073
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic fired, revealing a large number of embedded external links, many of which are hosted on Shopify. The primary malicious URL identified is https://ttraff.cc/pify?keyword=kendo+grid+row+template+color, which likely serves as a redirector to a malicious payload or phishing page. The document body contains garbled text but includes the malicious URL and several benign-looking PDF links, suggesting a lure or obfuscation technique.

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=kendo+grid+row+template+color
    • http://files.elizabethkburns.com/uploads/1/3/1/6/131607000/2d39b2e111745.pdf
    • http://files.ginaandthebean.com/uploads/1/3/1/4/131413040/pasinabarek-nabizefi.pdf
    • http://files.thedivide30k.com/uploads/1/3/1/4/131438193/pulijudolabexifuba.pdf
    • http://files.rockfishdesigns.com/uploads/1/3/0/9/130969354/sinapa-bogofow-rudijaga-luxigede.pdf
    • http://files.jasonspitzer.org/uploads/1/3/1/3/131398555/fadelokujaw_zezudimedalazis.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/teoria_de_bases_de_datos_relacionales.pdf
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/79123813758.pdf
    • https://cdn.shopify.com/s/files/1/0434/3100/2269/files/bopedosebobu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/assinar_com_certificado_digital_gratuito.pdf
    • https://cdn.shopify.com/s/files/1/0430/9640/8218/files/agribusiness_management_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/8998/4678/files/definicion_de_estrategia_de_aprendizaje_segun_autores.pdf
    • https://cdn.shopify.com/s/files/1/0437/6782/4533/files/15054157847.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5757/files/zagajuroviw.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/8006/files/mastoiditis_aguda.pdf
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/code_corine_biotope.pdf
    • https://cdn.shopify.com/s/files/1/0432/8099/0366/files/autumn_leaves_piano_accompaniment.pdf
    • http://angularjs.org
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c9b.bin
0db984440327bb83775151c6dec3feaf1ff7bf6f26cfbee6fe33f87648b16ac3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9B 5276 bytes
font_01_sfnt_off00006e82.bin
32358e11195b7bc74dc69b1ec77337797b27d2319967fb2d51345f7f977fbe63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E82 6520 bytes
font_02_sfnt_off00008075.bin
b8242bfe37300b9a3c67f40f3b05023747af85b31770058ca2a6ff36be49ff57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8075 16012 bytes
font_03_sfnt_off0000b306.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB306 16204 bytes

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