Malicious PDF — malware analysis report

Static analysis result for SHA-256 2301ed9cf7f51799…

MALICIOUS

PDF

51.4 KB Created: 2020-10-28 10:04:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: fb108d1afc43527987fcb41b54bb9eb8 SHA-1: 823987a0bac405ab780c80ac200fe9b451a801a3 SHA-256: 2301ed9cf7f51799b11d43aa6a4b11df04a8767e182f9861c1858f5c179fea78
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.link/123?keyword=my+genes+made+me+do+it+review In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370267/normal_5f88bc7a24cf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378605/normal_5f90925e28629.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391317/normal_5f8e9873276b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407087/normal_5f961ae4aa103.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390366/normal_5f95dcb31878a.pdfIn PDF document text
    • https://rofexigu.weebly.com/uploads/1/3/0/7/130738805/775539d2eb126.pdfIn PDF document text
    • https://wenadexedodoren.weebly.com/uploads/1/3/4/3/134322255/5874025.pdfIn PDF document text
    • https://wosowabo.weebly.com/uploads/1/3/4/3/134340570/wavonugu.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/72e56.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007eb2.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007eb2.bin)
    • https://s3.amazonaws.com/zetare/55663845534.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/botany_for_degree_students_by_ac_dutta_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5794/3206/files/xepevobagaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/pifokolomorivoxor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6482/6773/files/jukulitafasedadej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4606/3258/files/93461763428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4828/files/xoluruf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4870/4444/files/kojezulul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9057/3987/files/benefits_of_social_media_marketing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3250/9085/files/jeep_cherokee_latitude_2020_manual.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 extracted file (font_00_sfnt_off00007eb2.bin)
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn extracted file (font_01_sfnt_off000090f6.bin)
    • http://www.gnu.org/copyleft/gpl.htmRegularIn extracted file (font_01_sfnt_off000090f6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007eb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB2 5372 bytes
SHA-256: 711778e084ceb1a9871e7077ab4a33625f4ce068eddcfaa2fcd9ec36958de140
font_01_sfnt_off000090f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F6 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off00009c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C5A 10416 bytes
SHA-256: 1bc0e0e47bb65c13c2e69dc5657592d6c8f6576bb7541bf00f23942bffc15970