Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ba3839a24a619b…

MALICIOUS

PDF

71.9 KB Created: 2021-02-15 05:16:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fddc62a4eade4b8ccbb506ad46997a09 SHA-1: 3a2d9dec98e5ca39a934a0f0fcc40726c8b8e872 SHA-256: 04ba3839a24a619b7862fba0a4d6759f331d37544c43882947e0d0d0d70851af
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=sample+action+research+report+format In PDF document text
    • http://remastacer.com/ordis_voice_actor06v2m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501486/normal_6025f1f7575cb.pdfIn PDF document text
    • http://gogotmif.space/academic_paper_writing_formata2qlv.pdfIn PDF document text
    • http://braco.ru/kotor_2_warehouse_codew7gac.pdfIn PDF document text
    • http://cyberlife.store/gb_whatsapp_transparent_prime_latest_versionozabl.pdfIn PDF document text
    • http://idealica-uficiale.website/aarariraro_video_song_hdzukjz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_60159fd63c690.pdfIn PDF document text
    • http://blu-ital.space/xumenosajuzebinifasody477w.pdfIn PDF document text
    • http://mosquito.codes/woguxedezex45b0z.pdfIn PDF document text
    • http://antonioit.fun/border_designs_for_freeab9rb.pdfIn PDF document text
    • http://limaxinsto.xyz/wafajesenasupomurikoxm8pil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421627/normal_6022e74d38fe1.pdfIn PDF document text
    • http://ottics.ru/finding_dory_movie_free_in_tamil0gap3.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/mefovu/pekunaxibedazimaz.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/mulefo.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/facebook_collage_template_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/connectwise_university_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/android_handler._callback_handlemessage_return_value.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_off0000dd25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD25 5356 bytes
SHA-256: b4e613ba9000c30b6c727888b95966d1dd88b09f40c1ff5cc75fcb6288d9dc9a
font_01_sfnt_off0000ef2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2C 10380 bytes
SHA-256: d3fbfa74c7a4833875c9eaf2cc6e52c3ca6d4df9c48aeea7f988093406d4f08d