Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5699dde03a72a7b…

MALICIOUS

PDF

73.0 KB Created: 2021-02-21 11:48:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 17826fa926eb8831b0acfbbc8dcfe438 SHA-1: 44367543e99d451ed6dbb7ce06869b90ae476390 SHA-256: c5699dde03a72a7bfc8307134fa722d709466591e2b69ebbd920f1db47787ab5
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crophysi.ru/wix?keyword=sliding+door+guide+lowes In PDF document text
    • http://sreda.city/holy_paladin_guide_bfa_pvp6aiap.pdfIn PDF document text
    • https://pipamoximiketo.weebly.com/uploads/1/3/0/9/130969724/7940538.pdfIn PDF document text
    • https://jolidezebixisu.weebly.com/uploads/1/3/3/9/133997790/6982238.pdfIn PDF document text
    • http://boost-store.net/mama_bear_legal_formsr6f1y.pdfIn PDF document text
    • http://smartline58.ru/how_to_install_q_see_wifi_camera9jjyn.pdfIn PDF document text
    • http://educationonline.website/4273477555489f9z.pdfIn PDF document text
    • https://mudatikijamowa.weebly.com/uploads/1/3/1/4/131408537/0ec885b80.pdfIn PDF document text
    • http://fabermanufacture.ru/sumomojapatif6uxu4.pdfIn PDF document text
    • http://promoocaoameericanas.com/nf_therapy_session_download06gdm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369305/normal_5fe64226a21d0.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/bufipevuril/54635261443.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/who_played_naomi_in_wolf_of_wall_street.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/comic_storyboard_template.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/o_que_e_a_doena_anemia_falciforme.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_off0000e2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CE 4980 bytes
SHA-256: 6212716169c4e4b2a2e2d810c57830fda123118287958dff67811889157fdcb8
font_01_sfnt_off0000f3dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DC 10324 bytes
SHA-256: d8a73bbe91a0f84e1d858c8c129da58e132e26e08223c8ebc1d4012d21ad2e87