Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef3e1e304d7c05c…

MALICIOUS

PDF

67.2 KB Created: 2021-02-21 22:42:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2aeb3fedaee39a87ef7d7daa6f82bcc1 SHA-1: f8c7589def47aec26ccd9df88b22367890d011e4 SHA-256: eef3e1e304d7c05c8bd0ee247b18013ab8324975fba3a4307d0114a7afe4f3a9
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=mini+head+basketball+unblocked PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367312/normal_601ae02c04bf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383165/normal_601a38613c14d.pdfIn PDF document text
    • https://badakawage.weebly.com/uploads/1/3/0/9/130969543/8199656.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490256/normal_601a714f5d902.pdfIn PDF document text
    • http://bupetud.xyz/dragon_ball_super_manga_66_spoilerqdm9x.pdfIn PDF document text
    • http://fepemewavitik.66ghz.com/retir.pdfIn PDF document text
    • https://guwulazavuwaba.weebly.com/uploads/1/3/2/3/132302871/wugegexi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482623/normal_5fc728d7a9f07.pdfIn PDF document text
    • https://votarozoxanobo.weebly.com/uploads/1/3/4/3/134315144/nunikakeko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368266/normal_600df7dbd02fd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vaguxaza.epizy.com/how_much_does_a_physiology_professor_make.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/bepejevosepuzazi.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/jafaramitekil.pdfIn PDF document text
    • http://bedegotix.epizy.com/palmistry_guide_print.pdfIn PDF document text
    • http://besidoxaz.rf.gd/paruxegi.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/first_day_of_kindergarten_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/limerawasozim.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/aeroporto_de_guarulhos_telefone_para_informaes.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/71717959537.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/wallpaper_hd_new_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/krishna_cartoon_hd_photo.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_off0000cb37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB37 5140 bytes
SHA-256: 35582317dc676b9ddbb9bf487f6d3023f53100e1b644a02e722ecdaaf202eb64
font_01_sfnt_off0000dcbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBB 10192 bytes
SHA-256: fc97b9e266bc7e3fd3a0e8c6ab0e55b49b334edecfa21bc6d04b093c2ea4ff85