Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbdbc285e95751b5…

MALICIOUS

PDF

72.9 KB Created: 2021-03-01 09:51:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 25d74041754abf0e7c5284fee12d821b SHA-1: 997653d24d354a92b7091c721b170934f3a9c16f SHA-256: fbdbc285e95751b5de823c7696c8ed6f4534eda743ae40f76bfc8f6ca56b5613
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=backcourt+violation+basketball PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494883/normal_6005aedb1b6c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463308/normal_601cdb8a9aba6.pdfIn PDF document text
    • https://cdn.sqhk.co/kogujipubap/ThgnQgi/zusokujaso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_6010d4665fa85.pdfIn PDF document text
    • https://cdn.sqhk.co/tatolodam/cTUjhuJ/fruit_cutting_game_free_download_for_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406166/normal_5fc92f23b8fd1.pdfIn PDF document text
    • http://pedagodogiko.getenjoyment.net/how_to_speak_mandalorian.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/compare_and_contrast_essay_examples_8th_grade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493600/normal_601ef15160ee9.pdfIn PDF document text
    • https://cdn.sqhk.co/suxepemup/ibhh3ar/buzzfeed_quiz_celebrity_look_alike.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482407/normal_603608e6f1af6.pdfIn PDF document text
    • https://cdn.sqhk.co/topazawu/hhwZ8L3/99659724617.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377674/normal_5fe88fb3bb9ba.pdfIn PDF document text
    • http://sugameloxufe.mywebcommunity.org/how_to_connect_directv_remote_to_onn_roku_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/iDieghv/2020_college_football_season_covid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465907/normal_5fdb1a3999ed8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480142/normal_5fdd59f3c94cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479679/normal_602c192a394bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466370/normal_6039084ad3b41.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rosajeku.myartsonline.com/how_to_teach_basic_paragraph_writing_2nd_grade.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_off0000e31a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE31A 5108 bytes
SHA-256: aa90179944bf35c0a744643f3c600e87c8f9eaf87407a3f43880ae04b074bc8d
font_01_sfnt_off0000f490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF490 9880 bytes
SHA-256: 76eb1c43c7ef6948eca0655a52733a15aab93cc0ed702e1de36b0c7913e804f4

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