Malicious PDF — malware analysis report

Static analysis result for SHA-256 17cf0ed678f5fa5f…

MALICIOUS

PDF

57.8 KB Created: 2020-08-06 00:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 834a77bb380353bcab1bc4253f1baefc SHA-1: f488ea88df7921bff21a418fd65e2ff642613cce SHA-256: 17cf0ed678f5fa5f7353797bd5de82e2e7403b258e11bbdede72a63be5205800
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=abecedario+en+frances+pdf`. This indicates the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=abecedario+en+frances+pdf
    • http://files.restauranthibiscus.com/uploads/1/3/0/7/130776841/5106130.pdf
    • http://files.inspiredimagecreations.com/uploads/1/3/1/4/131453574/lidimenex.pdf
    • http://files.amgriffinbooks.com/uploads/1/3/2/6/132695574/zonewimebefanivitat.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/foxit_portable.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/74974220695.pdf
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/32019575978.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0942/files/zofesegugojidisebuwira.pdf
    • https://cdn.shopify.com/s/files/1/0428/9436/0743/files/40236387638.pdf
    • https://cdn.shopify.com/s/files/1/0434/1393/0138/files/gimp_2._8_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/4020/2142/files/16678500490.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/6533890560.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/29082781507.pdf
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/gakifafiwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/1484302633.pdf
    • https://cdn.shopify.com/s/files/1/0436/5221/9030/files/30118062520.pdf
    • https://cdn.shopify.com/s/files/1/0438/8637/9160/files/42225272802.pdf
    • https://cdn.shopify.com/s/files/1/0430/3853/9927/files/28957535384.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007957.bin
bf52a6901bf58152ec6ca680816b973b50effb4f72bec29e398b161c1a7cf81f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7957 5248 bytes
font_01_sfnt_off00008b34.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B34 1800 bytes
font_02_sfnt_off000093c2.bin
9ff19fc915ac2463a5977a5be8d07c146d96a6b6b57d0d91df82d88ce5a32ddd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93C2 15452 bytes
font_03_sfnt_off0000c2b7.bin
e5355abaff8fcab33ce34e55931ff21a393705a3507c9049660e5b960e5a87d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B7 16100 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.