Malicious PDF — malware analysis report

Static analysis result for SHA-256 459fbbbe90bef114…

MALICIOUS

PDF

67.0 KB Created: 2020-11-10 09:59:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: cc3f9a426b44a802eeadcde6c98a1d5b SHA-1: 29e1020eb21a8b495cf4abbb9e9f69bd17630022 SHA-256: 459fbbbe90bef114590405271603f2d2b069f44759b7283d614b6cbc74bf0f76
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/123?keyword=gift+deed+texas+word+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379476/normal_5fa6dca00ee6a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/078b8d46-3386-478f-aec9-f48181741bf8/wesebatozokuzeduvakejabu.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/jarazalafarojewajete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c23264c-9f57-4cf1-8f4a-0b40e20480e6/rovetatofazese.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/67654093167.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25c69982-6c86-41c1-8afc-e1fded0d0082/94141990053.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/177f101f-a43a-4a5b-affe-97f2371a01bf/solubility_curve_practice_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb9e84a6-0330-4ba3-91d0-6a22b8e70bc8/tedowesuxizukamapibupi.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/jebifajiporesasonomegutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d5c13a0-1b39-454d-a44f-3fd5a1c8612a/95479698783.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/22197766493.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/animal_farm_answers.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_off0000cb82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB82 5380 bytes
SHA-256: dfff7fec1ccb3da585167cbff072180338e0d5cd897be890c5ad39fd622fffd7
font_01_sfnt_off0000ddd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD5 9768 bytes
SHA-256: 8e85f031d470d22cf4260519d9ab2e68b7b7bdef6889472f37b772f50e84a46b