Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eda411b42546e1d…

MALICIOUS

PDF

43.3 KB Created: 2020-10-27 23:28:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2d35897b6f668cba8ee4d777a89474ec SHA-1: d09eb986c6a00c51bc09fe4cdd6f69adff04b328 SHA-256: 6eda411b42546e1d2c421fba8b0f3146111fcea2c89bccf959ead9dc36cd80df
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.me/123?keyword=ottoson+middle+school+arlington+ma In PDF document text
    • https://tupipukevoluda.weebly.com/uploads/1/3/4/0/134041298/wukipudomidexulezow.pdfIn PDF document text
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/pulijokitenomulu.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/e8b82cc.pdfIn PDF document text
    • https://vixeroniwemeful.weebly.com/uploads/1/3/0/7/130740086/dububobezil-wosogefaralexu-vaxibarigem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393499/normal_5f9250d3481be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369309/normal_5f89feb7c5d3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379612/normal_5f90a0f856097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366628/normal_5f91597c4053f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393626/normal_5f98173ca9f75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376869/normal_5f8aaede0bb29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407102/normal_5f92634ac030e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371799/normal_5f949449ce417.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rorives/caliper_test_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/pedumenezet.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/tumazetinafebebewotevir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5221/8541/files/vufatid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/9329/4749/files/skripsi_uin_bandung.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0593/7317/files/pomifatowiluki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9154/9590/files/vanity_of_vanities_all_is_vanity_and_vexation_of_spirit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5092/1895/files/52860114949.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_off000069c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C4 5380 bytes
SHA-256: 9a0f1f8b0c56f4acffbd85d55d778761e48c21dedda8630617b9f93f3628d2d5
font_01_sfnt_off00007bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD0 10536 bytes
SHA-256: beccd037391cdde768c390c75d193c03a8421293a9e485fc3d9de72555a18926