Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a72fe7ea4d1dc1…

MALICIOUS

PDF

71.3 KB Created: 2021-02-03 13:13:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 53e4742cf9279b6c9871f979d6f3cd34 SHA-1: ce11bb378c421d3372d54e4b0a0704d10152100e SHA-256: 14a72fe7ea4d1dc1998d7b29aa9c807e4053d5979271b77d36fcd71d7f244b8e
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://leonvi.ru/aws?utm_term=lettering+practice+sheet+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4496816/normal_60176a658d78b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380393/normal_5ff4a68cab47f.pdfIn PDF document text
    • http://slimitalia.space/manualidades_con_palitos_de_madera_paso_a_pasooejjy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382408/normal_5fdc3b43ea44f.pdfIn PDF document text
    • http://medyayazilimtr.com/roredejelejigovea712n.pdfIn PDF document text
    • https://rudabukonavapuk.weebly.com/uploads/1/3/4/0/134016662/watuziberulo.pdfIn PDF document text
    • http://gatorama.fun/homework_checklist_template_for_students9zdpj.pdfIn PDF document text
    • http://opssmall.space/pejulapubwnqu.pdfIn PDF document text
    • http://hihikane.space/new_english_song_video_status_download_for_whatsapphhjii.pdfIn PDF document text
    • http://obzorov.site/zifejefewetoxazukisebrcyw4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383695/normal_6014dfaab9866.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/fasevusop-bizagetab-tasegebozosen-wegopobolitam.pdfIn PDF document text
    • http://fb-ig-copyright.com/hearts_of_darkness_marvelcv3wp.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/pozokimepe/creative_writing_worksheet_for_grade_4.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/52527789545.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/distribution_board_installation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/length_conversion_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/american_made_2017_movie.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_off0000dbfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFB 5324 bytes
SHA-256: 19bea716d8ad836d85b216641d876efe1a3c963d1b0dfba784b276c182534244
font_01_sfnt_off0000ee17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE17 10072 bytes
SHA-256: 7c12804a490312f8963f30d8080aa20022058759827810e4ede361947be945b1