Malicious PDF — malware analysis report

Static analysis result for SHA-256 2924f08c392abec1…

MALICIOUS

PDF

42.1 KB Created: 2020-11-05 08:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 063aa0a4fa2ec135f4383fac425a1a80 SHA-1: 721ccf11b6829b08c18975ea1aedff8a0986c3de SHA-256: 2924f08c392abec19f399949d11a4e11bbcadd801f4fff69096a5ab4caa0793e
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.me/123?keyword=air+filter+cross+reference+list In PDF document text
    • https://siropenisawad.weebly.com/uploads/1/3/4/3/134353493/3663021.pdfIn PDF document text
    • https://ruzunaxatan.weebly.com/uploads/1/3/4/3/134340268/sekupuvixakof_tomafikiwexilu.pdfIn PDF document text
    • https://gudagomafefaxer.weebly.com/uploads/1/3/4/5/134523608/paxowipilu.pdfIn PDF document text
    • https://raralulewuk.weebly.com/uploads/1/3/4/4/134478892/3552408.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/kabisebax/salazunajusitomagojumeje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bfd96d2-e775-403f-816c-861fe9b4a346/kingdom_come_deliverance_avid_reader.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/field_engineer_salary_construction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14e3cd0e-1385-422a-8e23-39ab8f28ace3/cryptic_quiz_answers_148.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/xisivokoduxiwedalekos.pdfIn PDF document text
    • https://s3.amazonaws.com/zokokamu/xolemuwimeniganiludevupi.pdfIn PDF document text
    • https://s3.amazonaws.com/kimoweworape/cualidades_positivas_de_una_persona_para_trabajar.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/satiku.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_off00006969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6969 4652 bytes
SHA-256: f0bef45ec6df90d8fa03adc1f7885f112ccbd09e19abee05077f6bdfa5991442
font_01_sfnt_off00007955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7955 10284 bytes
SHA-256: 813f8629b6ffa724e9ad7ffeb74783cb1edcba55b1fe924939a3f78daa3e8654