Malicious PDF — malware analysis report

Static analysis result for SHA-256 be73933e600400cd…

MALICIOUS

PDF

47.4 KB Created: 2020-10-26 05:58:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: f7f6150428876459eddc48762d9cda91 SHA-1: 56095753370547244bdae3fb83642337ef4c30bb SHA-256: be73933e600400cdd9853e80976c0a85d88cfa72adf7866429e4119b97da549c
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://gettraff.ru/aws?keyword=agrigento+map+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f87004d9e9d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390051/normal_5f9616e0941d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369516/normal_5f87b65c1e3e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379362/normal_5f8ced1214ccb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379482/normal_5f8f9a84cd796.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378834/normal_5f90ea351611d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5f87d3b58cfd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416150/normal_5f95666a6fc55.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/1/0497/5060/5983/files/lazevetomifamosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6230/8247/files/katusenumozapeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5978/1023/files/gestalt_o_que.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e61c932-225a-4032-9f56-500c54192c11/julusejevugaliwufun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7351d5bd-e0c9-4f29-8863-61b07ea3bb09/juvujuzofepemewe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48c3be57-2f93-4111-8c70-bcc9474c4e4e/four_sided_pyramid_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8170/6919/files/precalculus_introduction_to_limits_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6115/8300/files/indesign_text_wrap_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4442/0246/files/6_important_objectives_of_government_budget.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6417/6021/files/kafenafuwaroje.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/bank_exam_questions_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/sogotitigisumev.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/32409768818.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/93589701018.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_off00007936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7936 5140 bytes
SHA-256: bacea33e2df1412b4deb4806403a2e1efd35e53c1f1e7f01b0696b9b2845ea59
font_01_sfnt_off00008a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A97 11580 bytes
SHA-256: 1e57c2cb13cc01f6e6f6182f6aa00213860a41cb10151ab8786194391af602c7