Malicious PDF — malware analysis report

Static analysis result for SHA-256 77927f62e993bc70…

MALICIOUS

PDF

68.9 KB Created: 2021-02-11 18:33:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c83375b95ae7a91df283fdffac4bef7f SHA-1: d795281bfd21fe2e0df15726c0bfeee1f637ecff SHA-256: 77927f62e993bc705c78ba05f6e454fb07ee402b7f6d67748323cbaa3894118d
196 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
  • 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.
  • 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/wix?keyword=super+mario+rpg+android+apk PDF link annotation
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/e6dab58856c.pdfIn PDF document text
    • https://susakatevasek.weebly.com/uploads/1/3/4/8/134871092/dc097fc459.pdfIn PDF document text
    • http://baykamif.space/357515474299rgdz.pdfIn PDF document text
    • http://helps-lnstagramcopyrights-about.com/buku_sejarah_dinasti_abbasiyahnmepy.pdfIn PDF document text
    • http://ludshop.xyz/990693243920scph.pdfIn PDF document text
    • http://islemleriniz.org/mofenojapaxuy3lq8.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/jggn8xs/katekyo_hitman_reborn_dub_episode_1.pdfIn PDF document text
    • https://fikadodovawewa.weebly.com/uploads/1/3/4/3/134320255/3180770.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/kikunojulejuj/92949054006.pdfIn PDF document text
    • http://puwokamavureme.rf.gd/dovey_magnum_bawl_out_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/sagojod.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/gixesaduboxori.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/jll_oscar_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/wivajowogazu.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/templateurl_in_angularjs_component.pdfIn PDF document text
    • http://valamujunitun.epizy.com/babbu_maan_sad_songs_mr_jatt.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/vudina.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/autocad_2018_student_version.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_off0000d319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD319 5236 bytes
SHA-256: 199ac2a173818e8cd93878fc425da68dc419f7279409af5ba29b57992af38c91
font_01_sfnt_off0000e4cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CC 9984 bytes
SHA-256: 3a77a1d5b2c2e17afbf9e68025a6d0e1ba796cc81f35834dbe6d9e3f20cfe878

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