Malicious PDF — malware analysis report

Static analysis result for SHA-256 d842253a9d025ca9…

MALICIOUS

PDF

69.7 KB Created: 2021-03-01 15:07:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e7679752ea6b03eea71bcce3ddc5a9d6 SHA-1: 5d0a8908f02fe6ba703380a641913ae6d999278e SHA-256: d842253a9d025ca9230ab403607b59315eb63291382a40815f3e42a6ed87a875
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/award?keyword=how+to+cite+an+online+article+in+chicago PDF link annotation
    • https://cdn.sqhk.co/kugefiruxat/gjVEtgc/word_connect_2020_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/noruwotil/heWil5l/download_cheat_talking_tom_2_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405420/normal_5fe472ded0078.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/fqrGUgi/56896610587.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/XiifUlq/east_frontage_road.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414156/normal_5fec1b01361e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_6022236ce6ef3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wipidomi.rf.gd/cambridge_lms_level_3_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/kenmore_ultra_wash_ii_dishwasher_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/70809356883.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/rutex.pdfIn PDF document text
    • http://bibekuxamawijoz.epizy.com/jekisedijazef.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/37279891053.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/possessive_pronouns_worksheets_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/angry_birds_cartoon_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_off0000d573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD573 4936 bytes
SHA-256: 3142b64af6651a0153c80b551dd6bf490c7bbe6e772da34227e49adf25a0b5b6
font_01_sfnt_off0000e648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE648 10416 bytes
SHA-256: f2d97dc5d9d64eaefe2b8510c093b3d9c58ed955ec7e31be7d57daf3221727a6