Malicious PDF — malware analysis report

Static analysis result for SHA-256 75eba3b902f06c19…

MALICIOUS

PDF

41.8 KB Created: 2020-10-26 01:07:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ddbef4f615cd3bfe5f1b7e8ffb23dd2c SHA-1: aa1481954fdbfb8757b8ffe232f60a02b7cfc63b SHA-256: 75eba3b902f06c19e37a0b69481c4955d99110bc5a8c356eeb9ceb665693e339
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?keyword=patio+awning+manual+model+96073 In PDF document text
    • https://detosujedeke.weebly.com/uploads/1/3/4/3/134371576/71c5e7.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/4601264.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/2453840.pdfIn PDF document text
    • https://fiwatinizajof.weebly.com/uploads/1/3/0/8/130874156/zuzikevepisi.pdfIn PDF document text
    • https://tazejoga.weebly.com/uploads/1/3/1/3/131383942/e5d4abcf36.pdfIn PDF document text
    • https://sunawakajisume.weebly.com/uploads/1/3/4/3/134324988/fimoxetevev.pdfIn PDF document text
    • https://pimetagedipimop.weebly.com/uploads/1/3/1/6/131636886/dogovitatu_vumudavu_simopiz_lekogobavutota.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/3758324.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/5058122.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000607d.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000607d.bin)
    • https://cdn.shopify.com/s/files/1/0478/1791/6575/files/97345522290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1386/5124/files/fear_of_losing_someone_to_death.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4916/2654/files/boxojokemopij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3680/5800/files/punibawetimujakinabupafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d5e4dad-ee96-4df9-ac7d-d92c758bfc69/pagugoxojuxarawemu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dc3a9ad-10cc-4a36-a986-c1b3d7b39c1f/19312198978.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d7cd3b2-8a26-4b54-8e73-7008118b0f80/pebovemutilaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d3bd302-6c96-4f82-a453-3bc075ca58de/lafoziwopororumelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8479/5035/files/biwosapum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2536/6165/files/jedubitipuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9313/0390/files/muntingia_calabura_studies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4519/8237/files/nanny_mania_free_download_for_android.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_off0000607d.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000607d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607D 5660 bytes
SHA-256: 91616472f2abaa916fb9bc940bcd6186d685c700462d91c3b477d38c5ae3238b
font_01_sfnt_off000073bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BD 11564 bytes
SHA-256: 08ab413894c1ef9092c9bb2ec588a6b5e5009680d24265d01e474cd3267c5315