Malicious PDF — malware analysis report

Static analysis result for SHA-256 54e38ba6155f8e83…

MALICIOUS

PDF

41.0 KB Created: 2020-10-24 06:17:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 10bd951bb59d9054eadd3ebed3600ecb SHA-1: 854fcac179c4b900f63b849c72a0445cdefdfac0 SHA-256: 54e38ba6155f8e83ac3ff5d720e6f695fe11f491d42b63456f6a425fb0564a63
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/pify?keyword=manchester+united+fixtures+calendar+apk In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/temiban.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/xagiperogimatu.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/297c0.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/bozakuluguku_zuzozotunofem_kopenifev_fuxijirun.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/76a3c79ca168c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370265/normal_5f8ff9a6d225a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f86fcb979653.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384464/normal_5f8d2bb5bf51d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383915/normal_5f9160415b464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382620/normal_5f933061c1fb4.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005c8c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005c8c.bin)
    • https://s3.amazonaws.com/kigavanus/mopisij.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/11659313156.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/demographic_dividend_issues_and_challenges.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/financial_accounting_theory_7th_edition_download.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/43194877338.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/38773928016.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/32579143086.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/19477377260.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/hidden_technical_debt_in_machine_learning_systems.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/fominekukuvonokaginimiz.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/zoxinodiletuti.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/electrical_engineering_interview_questions_book.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/5238373282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7878/6965/files/8513322536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/9171/1931/files/70307103191.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_off00005c8c.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8C 5380 bytes
SHA-256: 7e66b73dbf89a1c6d7ca08e30e9d4ebeab7c14e878f3f496cb9086bb815c25cf
font_01_sfnt_off00006ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE5 10936 bytes
SHA-256: 884f3a7055241d08d2f095fe06572fb2e365b651f7a8a68daf7f9e55ced18f2b