Malicious PDF — malware analysis report

Static analysis result for SHA-256 73dbe9ab71c52be8…

MALICIOUS

PDF

69.1 KB Created: 2021-02-02 06:12:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 503bbcf24e6142d9cf5926368501f5bc SHA-1: 20b7e4cbda542f3415ad0be341041bea863e9be0 SHA-256: 73dbe9ab71c52be87a038b526cc0105cf008b44af9a79827b45785e371b26fa1
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://leonvi.ru/aws?utm_term=educators+guide+to+texas+school+law PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4382187/normal_5fe545c918e28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423133/normal_6005b01e72933.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459805/normal_5fde1233d58db.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/ihnicjg/nekodupulop.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/gavapozalilup/gedubakukonadexejoxatumes.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/warehouse_management.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/bemisal_movie_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/jabus.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/blocboy_jb_mercedes.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/little_nightmares_apk_revdl.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/nios_deled_assignment_marks_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/43156179700.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/37039687332.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/gas_station_business_plan_startup_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/sifagezoguxapip.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_off0000d20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20E 5320 bytes
SHA-256: ca574f91c9792e1f1bd4e8291139b3b8692920581d10de87f2e0ce53d79b7587
font_01_sfnt_off0000e431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE431 10296 bytes
SHA-256: a7e5aa39738449075c5261ddb66b1db28533b1c743d2b5f270ef61d3aa2f1b6a