Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd05f636ec59f944…

MALICIOUS

PDF

59.6 KB Created: 2020-10-30 19:04:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 0f3e364cfd56a1b110b209f532dad0cc SHA-1: 74b8751b106504c885d791a3a03c4d176152c3cf SHA-256: dd05f636ec59f944af1f54a076e053098c9697ba0c933acd7c82fadfe690db41
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/aws?keyword=solids+liquids+and+gases+worksheets+for+grade+7 In PDF document text
    • https://simisasokudu.weebly.com/uploads/1/3/4/2/134235492/pakivomivob.pdfIn PDF document text
    • https://dawiganolakegoz.weebly.com/uploads/1/3/4/3/134367714/zemiwabedeberab.pdfIn PDF document text
    • https://misopiwulasi.weebly.com/uploads/1/3/1/8/131856666/4a99a4461ea3fe.pdfIn PDF document text
    • https://nevitasez.weebly.com/uploads/1/3/4/3/134305442/8259836.pdfIn PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/8090319.pdfIn PDF document text
    • https://dewubonate.weebly.com/uploads/1/3/4/4/134466502/3864334.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000abaa.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000abaa.bin)
    • https://cdn.shopify.com/s/files/1/0507/8227/3707/files/kabhi_khushi_kabhie_gham_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/relationship_between_certainty_and_doubt_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/puxedujud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59119fef-1af6-40b3-a009-e0bd3cdcec65/wamuviziw.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/29507572389.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/lovekaxukimugede.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/public_relations_officer_duties_and_responsibilities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3739/1510/files/agama_shastra_books_in_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64e19a32-04fd-457a-9a88-5f6c7ca2dec3/gekur.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_off0000abaa.bin)

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_off0000abaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABAA 5636 bytes
SHA-256: a25501f3b5e055511c24be5c5c51e595132a66f3ec04ccca23c35acfe782cf32
font_01_sfnt_off0000bedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEDD 10068 bytes
SHA-256: 8b8c2b7ece294941f30e083da60199aad57be034d2e866c234821d8a0952ccd0

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