Malicious PDF — malware analysis report

Static analysis result for SHA-256 5746fdd6cc856526…

MALICIOUS

PDF

52.0 KB Created: 2020-08-14 19:08:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c98bffe8b3db9fc8edbd5208399c9f0 SHA-1: cd62f1f939a632dd108805d534ea7790212ac3b9 SHA-256: 5746fdd6cc856526deda079c9229456d7040355f2b8052d8f36ec9cf03d955d0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or spamming technique. The embedded URL in the document body, 'https://ttraff.cc/pify?keyword=account+based+marketing+plan+template', is likely intended to trick the user into downloading a malicious payload.

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=account+based+marketing+plan+template
    • http://files.hipababy.com.au/uploads/1/3/0/9/130969712/nowen_fotinuni_lutazoladepum_miminegapotifa.pdf
    • http://files.feedthewobbegong.com/uploads/1/3/0/9/130969708/9918213.pdf
    • http://lupeb.nomsieswoodcrafts.com/uploads/1/3/0/7/130776485/84c3186b56.pdf
    • http://files.jjsdka.org/uploads/1/3/0/9/130969819/98a098cf.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/lasazifesega.pdf
    • https://cdn.shopify.com/s/files/1/0434/2890/5127/files/64079562973.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/causas_de_amilasemia.pdf
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/84995996615.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5675/files/92820767514.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/atorvastatina_efectos_secundarios.pdf
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/savesqlite_airlines_airline_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/42085425045.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/numpy_rotate_vector.pdf
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/sikopezijaxakulenovirat.pdf
    • https://cdn.shopify.com/s/files/1/0430/7035/7661/files/brachytherapy_cervical_cancer.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_off00008c19.bin
d8add69d081d1031f318b58c742a638c0914e6c07225cae516fc3054b1548a52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C19 5584 bytes
font_01_sfnt_off00009ef3.bin
be922cd529f8dd3f70da3d6d1d6e1c8d4d6071f6eb8c9e4133497bfe65753f44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EF3 10528 bytes

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