Malicious PDF — malware analysis report

Static analysis result for SHA-256 089dd245c37e2088…

MALICIOUS

PDF

69.4 KB Created: 2021-02-16 09:43:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 36ab44435de1c51d65d5d855a3728411 SHA-1: 2ec8073a09c6e3db4f8e687fcedccdedd8fd8d65 SHA-256: 089dd245c37e2088e521190ed3502558617ad23e8fa5b464f4901543b253fc00
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/wix?keyword=innovation+worksheet+esl PDF link annotation
    • https://mizewipexu.weebly.com/uploads/1/3/4/6/134609608/3951635.pdfIn PDF document text
    • https://zemaxixose.weebly.com/uploads/1/3/4/6/134636511/4873775.pdfIn PDF document text
    • https://tiledumojamusej.weebly.com/uploads/1/3/4/0/134096308/6016165.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405642/normal_5fd287cac7ff5.pdfIn PDF document text
    • https://cdn.sqhk.co/gitopedevid/hchdcjg/12113825182.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464077/normal_5ffa378245c63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427544/normal_5ffcd17fbaa90.pdfIn PDF document text
    • https://lunokebu.weebly.com/uploads/1/3/4/6/134648327/ab6977ac.pdfIn PDF document text
    • https://rivewatot.weebly.com/uploads/1/3/3/9/133999312/waxupivorepi_wexatapi_lanixivixez.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/tesotiwapax/herbalism_profession_guide_classic.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/akilandakodi_brahmanda_nayagan_tamil_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/56555119400.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/bittorrent_client_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/fazezojepufefalazub.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/22954643734.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/material_design_guidelines_dropdown.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/catalogue_hafele_2017.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_off0000d4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BB 4928 bytes
SHA-256: 9b18520f595f7abdaa81a9c58cc123f0ecc2fbc7f988a755134bb611e8d9e483
font_01_sfnt_off0000e590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE590 10192 bytes
SHA-256: fa1aebbf5a836b9510bbec578b09fe81fae3c5c4f91f6690d476f46fa3a3ce16