Malicious PDF — malware analysis report

Static analysis result for SHA-256 18c6e11f0dffcf8f…

MALICIOUS

PDF

40.1 KB Created: 2020-09-11 03:16:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c7c878342123fc7047772273deddbf2a SHA-1: 2e0874c8f151c861daa291fe671633617462e981 SHA-256: 18c6e11f0dffcf8f4a9cf0d641aa9b45df2b2b8fdab34d9e241299ee52860d6a
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.club/wix?keyword=kbc+live+answer In PDF document text
    • http://files.nicaraguaspanishlanguage.com/uploads/1/3/2/7/132740836/73a4170.pdfIn PDF document text
    • http://files.baystategalvanizing.com/uploads/1/3/1/0/131069812/suvumenutobajodi.pdfIn PDF document text
    • http://lofameged.lorrainepearl.com/uploads/1/3/1/0/131069759/jogopib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9361/2949/files/hypex_ucd180_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6674/4994/files/kivafudodabuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/8821/5963/files/higher_or_lower_unblocked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3511/5176/files/yowhatsapp_v8._0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4953/2069/files/34102861503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/embedding_a_gif_into_a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3444/6746/files/fm_approval_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/20703120579.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c1de29_38a366fb0a3c489f8e9481000b97081d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/73c254_8cee24b0471549718238113508f6e90e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3ceeb9_ebbecb9a05494e968421266cdc6e0f0d.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3B 5056 bytes
SHA-256: 0df9043319275bd7fff8a84a2266fda50b0b8b4fc979ba48f2aa10bdde82c497
font_01_sfnt_off00006f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F95 10636 bytes
SHA-256: 808b8d9635db55fc3a496002d00f67546e88bf7936a394a3799a4832cc77e204

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