Malicious PDF — malware analysis report

Static analysis result for SHA-256 015d4b3ab0ddd6d5…

MALICIOUS

PDF

41.8 KB Created: 2020-11-02 15:30:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9c2577e578c5b829a9930ed32ddd9e38 SHA-1: 56ba981bfd0548a6210ab601e6e66548eb993943 SHA-256: 015d4b3ab0ddd6d566a0166e7b812c7555d838567836049c769284eff953f359
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/123?keyword=reliance+jamnagar+refinery+capacity In PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/9177936.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tadib-pepalitegugoj.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/7207727.pdfIn PDF document text
    • https://farisogu.weebly.com/uploads/1/3/4/3/134307724/safegigefopuwaziw.pdfIn PDF document text
    • https://baresifesej.weebly.com/uploads/1/3/4/1/134131831/334ca235ef4.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/nidisetati.pdfIn PDF document text
    • https://sokegipamemaxo.weebly.com/uploads/1/3/4/3/134345901/9613409.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/xefafimofaxeparekuji.pdfIn PDF document text
    • https://fekoguto.weebly.com/uploads/1/3/4/4/134491689/xudez.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/26394e06-5d84-4c3b-8a8f-787d0316b09a/survival_games_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/67530674359.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/keyboard_alt_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/anticonvulsant_activity_of_medicinal_plants.pdfIn PDF document text
    • https://s3.amazonaws.com/lipekipuvenuji/watch_mulan_live_action_movie.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_off000062ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AC 5344 bytes
SHA-256: e9045193372942cf16398c8bf28db9f2430bf24f799f1b27fe65aad8b4d8f704
font_01_sfnt_off000074dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74DC 10928 bytes
SHA-256: afed0c28435b13bcffd5776f64558d0b0a7a2ff677c72ad4473ad2df23d4d304