Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d7a5f4bdc214e68…

MALICIOUS

PDF

87.0 KB Created: 2021-02-08 18:02:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bcebbf8817bb245bcafcbf19053ada14 SHA-1: 71f9efb3298b5da97df8b604c43d942f201bd9a1 SHA-256: 2d7a5f4bdc214e68b45e2bd92c5a24a3b4e91d31a91ae38bfb525c45a232dc82
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://jottigo.ru/wb?keyword=colchester%20sixth%20form%20college%20staff%20list PDF link annotation
    • http://swast-group.website/jimu_unicorn_robot_instructionsozvf6.pdfIn PDF document text
    • http://pimovanurebi.22web.org/baaghi_songs_video_mp4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486351/normal_601ab6a777ba6.pdfIn PDF document text
    • http://ellmax-site.xyz/disha_computer_book_in_hindic6o86.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/home_design_caribbean_life_game_mod_apk_download5fzby.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393348/normal_5fdebef68abba.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/jukoxisojow/diwekubifiguk.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/comma_engine_oil_guide.pdfIn PDF document text
    • http://lolukojalima.epizy.com/gresham_oregon_police_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/burma_map.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/kijixekajuwedudofitule.pdfIn PDF document text
    • http://xonukekavufimil.epizy.com/algebraic_identities_class_8_questions_and_answers.pdfIn PDF document text
    • http://fuzadakeju.epizy.com/22786914148.pdfIn PDF document text
    • http://bidexegope.epizy.com/19640150586.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/kopuzumefef.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_off00011708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11708 5268 bytes
SHA-256: e87db0bdfa28202c75417045daad3d754a2cd4ca3937f913b40d379c872167df
font_01_sfnt_off000128c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128C9 11308 bytes
SHA-256: bf5a32caefa551f72e68bce6094a8141f47d9d050dc6df911955267c3c833ffb