Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc79e5f073dcfb2b…

MALICIOUS

PDF

68.1 KB Created: 2021-02-17 08:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7fb51d69db11f93a0da1367f8a7fb822 SHA-1: e5054ce7ca7daedf63b7fc3f318fe50552ee3131 SHA-256: cc79e5f073dcfb2b6e4817efdcfb3441c14e5d735be74bc659805320a7b62b4b
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://jacksth.ru/wix?keyword=how+to+find+your+brachial+pulse PDF link annotation
    • https://cdn.sqhk.co/fedelubu/hcwiaUy/university_of_montana_law_school_class_profile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483354/normal_5fc60181e300c.pdfIn PDF document text
    • https://cdn.sqhk.co/rebamomidaw/0wgeiie/uphill_rush_7.pdfIn PDF document text
    • https://cdn.sqhk.co/xawefigi/he96Ejb/lords_and_castles_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/vivakawibaki/NhgUrih/92816992003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376086/normal_60186b31a3666.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409619/normal_5fe0f13a591e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446260/normal_601f3f2d688af.pdfIn PDF document text
    • https://cdn.sqhk.co/matajikiwov/iegdpgg/multicraft_login_beastnode.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479445/normal_60184de92f132.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sonisan.epizy.com/tentative_date_sheet_ignou_december_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/bionaire_humidifier_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/62593488896.pdfIn PDF document text
    • http://xapupatefi.rf.gd/maths_quiz_questions_form_1.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/xefuvol.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/texto_informativo_meio_ambiente_educao_infantil.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/manual_de_zanella_ceccato_150.pdfIn PDF document text
    • http://tunawibiga.rf.gd/o_liberalismo_poltico_john_rawls.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_off0000cda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA2 5540 bytes
SHA-256: cd77a7e910d7cfeaceb3faa54c553798ac51b973463a48c9459703e554f8a91c
font_01_sfnt_off0000e081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE081 10172 bytes
SHA-256: 778bbe37e2328ea6249de8ac7ae37341c5e81503a45d4ed6c5a5b13d1b757d9d