Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce3ee5803504e7f8…

MALICIOUS

PDF

71.4 KB Created: 2021-02-27 07:01:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d3f8cd2186a6dbc925cc94f28fd56f1c SHA-1: e495a07a703afee5082caf242c9a07c9b8037f4b SHA-256: ce3ee5803504e7f8e70a08901fa39d5d9b697537b2f72ee8b8058349e71f659b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gimoguvi.ru/wix?keyword=electricity+worksheet+2+-+voltage+current+and+resistance PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4428069/normal_601080ef704b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366959/normal_5fe7c119a0ee4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490539/normal_60344b0359c67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388163/normal_6029e42019cd3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474746/normal_5ff955ce31d46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458145/normal_5ff0dfe1e959b.pdfIn PDF document text
    • https://bezigetomesijag.weebly.com/uploads/1/3/1/0/131070469/bumositek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_6032c3c368c07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453551/normal_600120c450caa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380707/normal_5fd625bcd5eee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484804/normal_602ac07211d31.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/jijumupade/17240931496.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/pulse_oximeter_app_android.pdfIn PDF document text
    • http://fidajakafitota.epizy.com/what_causes_developmental_delay_in_babies.pdfIn PDF document text
    • http://lopusewagini.epizy.com/6174259508.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/vs_code_format_on_save_disable.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_off0000d8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CD 5640 bytes
SHA-256: 330c1c51be0819e92635463431024a8996cf0a857354c861b96dd1ee1c06551f
font_01_sfnt_off0000ec28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC28 10480 bytes
SHA-256: 4f3bdec056986022a81311a4dd0b24cf00db9abc94f36054af64e9f2721a0f8a

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