Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c38b0e4041291f2…

MALICIOUS

PDF

61.4 KB Created: 2021-01-30 15:09:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3c9d16fb85b078c79be97e368b6f5c3d SHA-1: 1672d5a38cb69a4b96b373263450d5d3249fb2fa SHA-256: 9c38b0e4041291f27aaf3a0e88423d0da609a2f91764599f07ec287a59db7ea0
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://seumenha.ru/aws?utm_term=ahimi+as+deka+mage+video PDF link annotation
    • https://cdn.sqhk.co/sirejeforox/gc8jMjP/package_inclusion_in_tagalog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410414/normal_5fcf158c4f7f7.pdfIn PDF document text
    • http://kufigada.22web.org/caractersticas_del_aprendizaje_significativo_y_memorstico.pdfIn PDF document text
    • https://cdn.sqhk.co/zufosupiz/AgMgcGl/tap_tap_fish_abyssrium_pole_release_date.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367922/normal_5fe8b2c3b571c.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvomafoda/ijchiTn/lodorudefapagewarab.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/mVhgMt8/45957944578.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://babematalal.epizy.com/kemavo.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/88640511607.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/ravejurunibasovirenedurid.pdfIn PDF document text
    • http://mafefelanepule.epizy.com/facebook_live_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/codycross_answers_group_39_puzzle_4.pdfIn PDF document text
    • http://zegemipufe.epizy.com/18675754950.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/forbes_travel_guide_awards_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/volunteer_police_cadets_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/napos.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/cv_template_free_south_africa_format.pdfIn PDF document text
    • http://wepaxilex.epizy.com/temario_auxilio_judicial_adams.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_off0000b767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB767 5224 bytes
SHA-256: 8fda9274cd7a81336345bec229332c39de050f4cc454d5a071f7f0447f563990
font_01_sfnt_off0000c90f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC90F 9316 bytes
SHA-256: be504f2726a4ef678dc06dc5ff39ec96a60ba334a0c1576523c94ca4b7013a47