Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e30ad53f34d702f…

MALICIOUS

PDF

67.6 KB Created: 2021-02-02 02:00:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 433da55693ad0f53745b4be2fce01dad SHA-1: f5827fbeb9485b876c9978cc51bda4db8487cd15 SHA-256: 3e30ad53f34d702f0553fa05cf782fce767b81b9d03833192a0b94800abd49e9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/aws?utm_term=river+flows+in+you+ukulele+sheet+music In PDF document text
    • https://static.s123-cdn-static.com/uploads/4465539/normal_5fc6d84c2f2ea.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/GaheifL/20780413369.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/tjggcjg/52895757664.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469847/normal_5fde0fb1cc870.pdfIn PDF document text
    • http://takodevizol.iblogger.org/40153806732.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469831/normal_60158e4acf822.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/wazagidonux/shetland_islands_tourist_information.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/bibizuwanojix.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/modelos_de_diagnostico_empresarial.pdfIn PDF document text
    • http://girifej.epizy.com/ropikire.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/biography_format_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/kotababafinozunakojeboz.pdfIn PDF document text
    • http://ketanuviz.epizy.com/90121709771.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/nenu_naa_ambani_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/assassin_creed_unity_apk_data_for_android.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_off0000cc04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC04 5236 bytes
SHA-256: 94f4921e2b13bf1aba1cc0fe7ab64662726d34438d49040d42a209405dc8b1e6
font_01_sfnt_off0000ddd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD0 10484 bytes
SHA-256: f48c3d46bdc8eee1e48f76da2da6cfe4e5a74a14e8d4281acb4ff852907aae6e