Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c05bd50f57a7fe…

MALICIOUS

PDF

70.9 KB Created: 2021-02-28 06:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: af1bf798621f487a397093091a1e5923 SHA-1: a7a617d8eecf341580d49d99a5411ec89ea969bb SHA-256: 73c05bd50f57a7fe3a99533f291d09ac54ab18156398f699472f1fe581ee4f05
136 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
  • 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://dugedepap.ru/wb?keyword=que%20enfermedad%20produce%20ardor%20en%20el%20cuerpo PDF link annotation
    • http://swiss-gear.shop/21142506905d07cb.pdfIn PDF document text
    • http://vuzetasavuxoso.mygamesonline.org/giwawuxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426955/normal_5fdc7b89bb56d.pdfIn PDF document text
    • https://cdn.sqhk.co/mafowixodi/dhghdl3/simple_reversible_chemical_reactions.pdfIn PDF document text
    • http://opensalon.xyz/free_photography_website_templates_html5v0srd.pdfIn PDF document text
    • http://dorightschool.com/classical_conditioning_lesson_plangsoff.pdfIn PDF document text
    • http://jilet2.club/m1_prepaid_card_hotline1mkhh.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/wsja9id/neradavejen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386081/normal_602e85d2ae941.pdfIn PDF document text
    • http://aires.fun/xilukivowirxoej.pdfIn PDF document text
    • http://raftgjgr.space/5939554951if0s2.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/wajufifenoxuj/24357941027.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/caravan_stories_english_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/wallpaper_god_hindu.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/bird_land_paradise_apk_day.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_off0000d67c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67C 5184 bytes
SHA-256: 7f278c7144c6af34c5c5318cbcaae6eb6a767aeb1c1ed69aceb81f18cebe78b9
font_01_sfnt_off0000e806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE806 11296 bytes
SHA-256: 3804f9dd94751c92bf1683a617babba366ba40a34e52d7a0529d8387f139af8d