Malicious PDF — malware analysis report

Static analysis result for SHA-256 602b2b5d8a435f37…

MALICIOUS

PDF

76.2 KB Created: 2021-02-17 18:53:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fd23a76dad05fd353a3a2ab3e3ae2706 SHA-1: f4d143f8e9d8fc5ec209217fff2883dc4dc13d1a SHA-256: 602b2b5d8a435f37b782bf7b1767045d54f85632df6cd9eeef7937f773fd9b86
136 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
  • 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://baarspo.ru/123?utm_term=the+birds+are+singing+at+night+lyrics+meaning PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4382780/normal_5fdf693551e3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380682/normal_5fff4d72395fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376870/normal_601e68e60acf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502336/normal_600d09f514abc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453103/normal_601d29d9bf41f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444114/normal_5fda9171b89f7.pdfIn PDF document text
    • http://nesobaka9.xyz/tn_v_v_binh_php_tn_t_tp_169gsdz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372983/normal_5ff11a5d4e00d.pdfIn PDF document text
    • http://voiprormul.xyz/raphaels_medical_astrology5v7ty.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460231/normal_60053b5eefb8e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://favekagopu.epizy.com/a_p_s_ki_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/cambridge_listening_book_2_test_3_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/36063898869.pdfIn PDF document text
    • http://mevalegija.rf.gd/16666523347.pdfIn PDF document text
    • http://telenusu.epizy.com/tazesoretodukebabariranub.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_off0000e497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE497 5544 bytes
SHA-256: 3fea11bcaba0540ab6642db3500b6e2b8c71a1da61160ba87d40b1dbc9c2c04e
font_01_sfnt_off0000f746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF746 14596 bytes
SHA-256: 0e5be9af522b7db601fcc2724f0e5fe39c428bc445f9f681aafe3d0884df69c3