Malicious PDF — malware analysis report

Static analysis result for SHA-256 88a611549941dc01…

MALICIOUS

PDF

68.3 KB Created: 2021-02-13 04:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f7ee057546e76ec1a58a4c1677628530 SHA-1: ec068a458576d0d6cae7d5009008118f0f5b0d49 SHA-256: 88a611549941dc01775537fb4275d3a138a4e0f04e88ada81a5ae7d7d1ea7aea
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://bologen.ru/wix?keyword=amendment+worksheet+bill+of+rights PDF link annotation
    • https://lononefebodamu.weebly.com/uploads/1/3/2/6/132696526/sizete.pdfIn PDF document text
    • https://jexepasevotapak.weebly.com/uploads/1/3/1/6/131606223/89f22b4d.pdfIn PDF document text
    • https://cdn.sqhk.co/xogudililavo/idhehjI/47211176389.pdfIn PDF document text
    • http://investorlands.ru/pexafejutiloxosrryk9.pdfIn PDF document text
    • http://bupatinewesep.66ghz.com/10261392557.pdfIn PDF document text
    • http://shoop-fn.ru/sigedejidogolipijedhqcqq.pdfIn PDF document text
    • http://runolive.com/407041789306rxsv.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/che90jd/ates_ve_su_3_buz_tap_nag_indir.pdfIn PDF document text
    • https://jeduwenerapowi.weebly.com/uploads/1/3/4/6/134678879/rezukirare.pdfIn PDF document text
    • http://lnstagramsupportinfo.com/wiruzesotomeruzolabotakt5cbd.pdfIn PDF document text
    • http://gatorama.site/41709976452jkic.pdfIn PDF document text
    • https://ludurodeb.weebly.com/uploads/1/3/4/8/134852143/dowelujidusozetum.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/xezonijida/membuka_file_chm_lewat_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/dream_on_aerosmith_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/free_html5_templates_for_blogs.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/wobimavo.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/metabolisme_lemak.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_off0000cf08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF08 5396 bytes
SHA-256: 048ecd73b75f854ca7a91e53feb3c26ef4656ad880dc029d7f045fc5edcd7455
font_01_sfnt_off0000e151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE151 10212 bytes
SHA-256: 5a6b5401ef0806b7eb89487e725eb903173d7727ff53cb81da74d3cd46e1a9af