Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74e17c4a4b45267…

MALICIOUS

PDF

66.1 KB Created: 2020-10-21 07:26:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b2648642ef452a616caa318fb266457a SHA-1: b429e75e9325a5bc00e4262ef50b9202f7eb107c SHA-256: e74e17c4a4b452674a1fedb59f6eac2047a7b34c5aa9d97527c391bdabf4ce42
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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.club/pify?keyword=achilles+rupture+rehab+exercises+pdf In PDF document text
    • https://xodetawutal.weebly.com/uploads/1/3/0/7/130774968/didew.pdfIn PDF document text
    • https://nikuwexipamojag.weebly.com/uploads/1/3/0/8/130813731/kemitunoxe.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/depeviteroxovasagela.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/4106527.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1791/6575/files/code_promo_bsp_auto_guide_du_routard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/6444/8955/files/yajnavalkya_smriti_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0313/6168/files/gujek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5958/2373/files/kogulexukapokifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7381/4172/files/chess_game_download_for_android_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7481/8726/files/rujaxita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4600/2584/files/41672293199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/5456/0928/files/urban_tantra_book.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/gepemojawi.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/alfonso_reyes_zubiria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/650114e5-d007-4892-afb3-e76af1feed1a/43107961838.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d043cd16-3f44-4d7e-b9b6-1b819b1909c0/16005796975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68bf058d-11af-4d59-8fb5-e35561999ff2/vozikokizagujimawud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9833905b-8770-4624-affe-903e1f9a07b4/boyce_and_diprima.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/97277635119.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/wto_analytical_index.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/calendario_completo_serie_a_19_20.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/althusser_ideology_and_ideological_state_apparatuses.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_off0000c356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC356 5440 bytes
SHA-256: acf38f971c89c9acf0d9adcbd6f09130d503030ec5b655273f702bef47e0e73b
font_01_sfnt_off0000d5c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C5 10776 bytes
SHA-256: cd26e99c0133ae5df045ee068a4cad530ea136bdea64dd193788c259cce741eb