Malicious PDF — malware analysis report

Static analysis result for SHA-256 011b414069cd40b2…

MALICIOUS

PDF

72.1 KB Created: 2021-02-15 15:35:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d7b2c6545794a3b9a32c62bc429355c9 SHA-1: 0963b1a1332dde56ded5275364afec08cc6b38a8 SHA-256: 011b414069cd40b2f8c5dc5f5e595e32f6ed8cbfe664d084645e508fc5d9406c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=nc+6th+grade+science+final+exam In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426823/normal_601999e16285e.pdfIn PDF document text
    • http://normab-id.com/pavedujafulifadobubezafozhpm.pdfIn PDF document text
    • http://dewobazul.22web.org/anchorage_earthquake_information_center.pdfIn PDF document text
    • http://mushygushysayings.com/health_sanitary_inspector_syllabusozreh.pdfIn PDF document text
    • http://latencfsrt.space/good_kid_maad_city_free_album_download7ighu.pdfIn PDF document text
    • http://sexedate69.site/beginner_dumbbell_workout_femaleyjeaq.pdfIn PDF document text
    • http://inmyshtangen.xyz/fish_tanks_for_sale_gumtreejl7lx.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/wozowuledij/kamadebu.pdfIn PDF document text
    • http://niruduzef.epizy.com/soxixawitinotovowo.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/radip.pdfIn PDF document text
    • http://tifilumiteva.epizy.com/scramble_for_africa_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/linkedin_application_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/bovaxigipiwuzosifojutil.pdfIn PDF document text
    • http://tizidirek.rf.gd/jasper_reports_form.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_off0000ddf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF9 5628 bytes
SHA-256: 5406b2f86ef81ec5c2efb85d96f303943eff93980c045112687369b9c68ae709
font_01_sfnt_off0000f102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF102 10168 bytes
SHA-256: c1d9c1a9d30f8b2cff748461bc2e189cc5f87d2de7aad1f80bb6f686b7dc4bba