Malicious PDF — malware analysis report

Static analysis result for SHA-256 e57ac6bf1dfcc6b5…

MALICIOUS

PDF

46.6 KB Created: 2020-11-09 07:16:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 0c41a071126873d2094afa86e1a37a03 SHA-1: 656eac4e42301bfe40c14dca67d70f4489aba704 SHA-256: e57ac6bf1dfcc6b553a55f32a112a76670cab8403b1fa68aa090cca03080540c
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://traffine.ru/123?keyword=the+complete+iep+guide In PDF document text
    • https://jifemeput.weebly.com/uploads/1/3/4/3/134398411/gaxidogimazagonifig.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/7672419.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/3250b5961ed1.pdfIn PDF document text
    • https://ramowukegi.weebly.com/uploads/1/3/4/5/134508735/kudina.pdfIn PDF document text
    • https://kazajibabagak.weebly.com/uploads/1/3/4/4/134467412/besiranorotuxamibuv.pdfIn PDF document text
    • http:///www.childlawgroup.comIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/wuberunusefasatenatev.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/ayreon_the_source_booklet.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/3636249243.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/33113756586.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/hamlet_machine_franais.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_off000076f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F8 4952 bytes
SHA-256: bed1c474a43ba4066f9a0cdafc4ed33b290eaef19795ede7e127f3edf72dc427
font_01_sfnt_off000087ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87AB 11440 bytes
SHA-256: 1751aff2147f72eaf1039b2766e5aba8192d0104e07044d690525e339276ac94