Malicious PDF — malware analysis report

Static analysis result for SHA-256 413c873171359b80…

MALICIOUS

PDF

71.4 KB Created: 2021-02-23 00:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: be51c485e4f651a39558b361e9e9f816 SHA-1: b8b603b55a8af5f2d7686d7cf865c5f348447b1e SHA-256: 413c873171359b8097361f2179da411cb3f502798f0b2f4e6b63365cd76563c7
136 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
  • 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=is+an+owl+a+mammal PDF link annotation
    • http://kfnwejfnkwheklf.space/najeeb_members_area_loginm4ra8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422134/normal_5feccb9915555.pdfIn PDF document text
    • http://rent-nout.site/baby_shower_diaper_raffle_tickets_free_template794ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376086/normal_600bc0f8f3a01.pdfIn PDF document text
    • http://momentikshop.space/tukemagokitavowuzb472o.pdfIn PDF document text
    • http://podcard2020.site/43409593207fqyhf.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/kigavanus/miniclip_games_bubble_trouble.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/android_x86_iso_with_google_play.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/negukarorezapumibu.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/autocad_lt_2014_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/46193258352.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/99_names_of_allah_in_hindi_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/75546493132.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/14261197060.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/uglydolls_full_movie_hd.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_off0000dda8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA8 4764 bytes
SHA-256: c93124a61c65e3b3d3e0f627651530f41207d4de4579a3f6fbcc06075e4873bf
font_01_sfnt_off0000eddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDB 10368 bytes
SHA-256: 4df01fdd2ec60ea583ce94e864afa46440298a0523c4a389cdba49d99f387977