Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc8b7974364334fb…

MALICIOUS

PDF

71.9 KB Created: 2021-02-26 15:40:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 08b4a6cce747c3c23b01397d507bb923 SHA-1: fad265eb6f83dd62cfe43d10899bb305ca7c22e9 SHA-256: dc8b7974364334fb88e3bd4fc0440c2c9e66c651d248a22cf80dc205cd799e57
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://soxebez.ru/award?keyword=how+to+reset+maintenance+light+on+highlander+2013 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411218/normal_5ff4e2cf59017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382639/normal_5ffec2831bad3.pdfIn PDF document text
    • http://lunatan.medianewsonline.com/takefabavuramufo.pdfIn PDF document text
    • https://guvatezip.weebly.com/uploads/1/3/0/7/130776756/6250756.pdfIn PDF document text
    • https://mopotiwifatuge.weebly.com/uploads/1/3/0/8/130813373/sopukanat.pdfIn PDF document text
    • https://fefedajukuda.weebly.com/uploads/1/3/1/0/131070841/movufusexeg-fibevexivuwesal-liwaromujewo.pdfIn PDF document text
    • https://fajuvupo.weebly.com/uploads/1/3/5/3/135310445/jeramebetiku_doxod_ruzaje.pdfIn PDF document text
    • http://rasudilikid.mywebcommunity.org/libros_de_harry_potter_en_espanol_para_leer.pdfIn PDF document text
    • http://berilunowalaz.iblogger.org/kenmore_oasis_washer_disassembly.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463010/normal_60325e42751a1.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/lososimap/lagu_audy_item_arti_hadirmu.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/linear_inequalities_examples_with_answers.pdfIn PDF document text
    • http://dutijut.epizy.com/how_long_do_you_cook_homemade_pizza_crust.pdfIn PDF document text
    • http://zovuzop.epizy.com/capsa_susun_for_cashtree_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/37769974593.pdfIn PDF document text
    • http://jibavorom.rf.gd/betway_ghana_app_apk_free.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/66451320812.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/17196980005.pdfIn PDF document text
    • http://zararogesa.epizy.com/76719080982.pdfIn PDF document text
    • http://kilarosine.atwebpages.com/onan_4000_microquiet_generator_carburetor_cleaning.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/arcane_legends_hack_apk.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_off0000dae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE1 5896 bytes
SHA-256: 4cfed19c1a81b08b32ba7fdf193328727259a0f1ad3f691becd3d0f59395e991
font_01_sfnt_off0000eecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECC 10136 bytes
SHA-256: 35d0fb89a45a65d2551fecb459933dd58447b9881413b21705f8aef06d24cfb1

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