Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe757ebf9338e5ad…

MALICIOUS

PDF

41.2 KB Created: 2020-10-07 02:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 04f9e49c3c96574db543e9405aab571b SHA-1: 69d7445a4c2f4c889a352115297eda141c16c8b3 SHA-256: fe757ebf9338e5ad31af508d7d3cd3fc4332044adb719b15b08801e4dcaa778c
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://cctraff.ru/pify?keyword=calculating+kinetic+and+potential+energy+worksheet In PDF document text
    • https://site-1038376.mozfiles.com/files/1038376/ruwemubojafasabo.pdfIn PDF document text
    • https://site-1040798.mozfiles.com/files/1040798/niraxejufiwepen.pdfIn PDF document text
    • https://site-1036861.mozfiles.com/files/1036861/44978008509.pdfIn PDF document text
    • https://site-1040145.mozfiles.com/files/1040145/xifat.pdfIn PDF document text
    • https://site-1038531.mozfiles.com/files/1038531/panijoz.pdfIn PDF document text
    • https://site-1036678.mozfiles.com/files/1036678/33227204139.pdfIn PDF document text
    • https://site-1039804.mozfiles.com/files/1039804/33852804013.pdfIn PDF document text
    • https://site-1043124.mozfiles.com/files/1043124/murofasoxajisajexojopub.pdfIn PDF document text
    • https://site-1043667.mozfiles.com/files/1043667/nexutewiwuzuw.pdfIn PDF document text
    • https://site-1039800.mozfiles.com/files/1039800/48888896110.pdfIn PDF document text
    • http://doxudanab.retreataberdeenshire.com/uploads/1/3/0/8/130813604/novimupuxiwisona.pdfIn PDF document text
    • http://files.cruisenvacationdeals.com/uploads/1/3/1/1/131163667/803284f02a.pdfIn PDF document text
    • http://files.katewestcott.com/uploads/1/3/0/9/130970003/fubepililovop_zutunup_jimon.pdfIn PDF document text
    • http://files.akadeltapsiomega.org/uploads/1/3/1/8/131857270/fadila_kuwaselilinuno_gefig.pdfIn PDF document text
    • http://files.ciccolofamily.org/uploads/1/3/1/3/131383750/kajafunewukikok.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/1/0481/6738/7303/files/minosharp_sharpening_guide_rails.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2138/1015/files/74355855935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/niduridarufiwixugeremome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9440/0423/files/ruxelubimosavivesizezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0360/0283/files/bizamak.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C2 5496 bytes
SHA-256: cd7782276177b3c60cba61f88fbd828daff066ce66c36f322ac1e97809a78ec9
font_01_sfnt_off0000757b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x757B 9896 bytes
SHA-256: 6addeb4c9316e8dad0e4596b55f348284306c52f4ec1e61fcb0750895a269de3

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