Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6087c9255f1635f…

MALICIOUS

PDF

71.7 KB Created: 2021-01-24 11:15:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d315c4ab222c9c393557bff6b480c455 SHA-1: 9cd0cd577a43d8808d730bd2979144161a6a6ecb SHA-256: f6087c9255f1635faa2450f0f4ad092b5521e10696ff66d2efdcff1d03d4b5ef
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wb?keyword=strawberry%20cake%20recipe%20easy%20uk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4444102/normal_5ff4529f31932.pdfIn PDF document text
    • http://homebig.space/somamady3u7m.pdfIn PDF document text
    • http://reform-st.ru/donuzobijorosoxejuzd1bon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369149/normal_5fe3da80cbf91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482869/normal_5ff5241bea45c.pdfIn PDF document text
    • http://herss.space/the_battle_cats_tier_list_9._0a7dnc.pdfIn PDF document text
    • http://legko.travel/mepulafunirarukudhw.pdfIn PDF document text
    • http://nemurirewokow.iblogger.org/tamove.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412894/normal_5fee49206c69e.pdfIn PDF document text
    • https://xajimago.weebly.com/uploads/1/3/0/8/130813364/gatuwerezosolo.pdfIn PDF document text
    • http://fitdieta.com/duck_hunt_arcade_game_for_sale2t682.pdfIn PDF document text
    • http://linza.media/nirisasikajivopuc4tv4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gevalej.epizy.com/dorigivod.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/garijo.pdfIn PDF document text
    • http://vodobugatusexa.epizy.com/butcher_s_guide_to_cuts_of_meat.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/template_cv_simple_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/tananamubemiwep.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/hogwarts_acceptance_letter_template_editable.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_off0000dbea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEA 5396 bytes
SHA-256: 247b83e4ba4ac3c0f5743ba9c3de37cb700bef3b74295b84fda9466a670bf36e
font_01_sfnt_off0000ee69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE69 10424 bytes
SHA-256: 569692e062a1f4dee5cf6e6f595945c7812bbaf76ce26821d002d8457056eadd