Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bcc9a7d10f68f43…

MALICIOUS

PDF

71.5 KB Created: 2021-01-28 16:54:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ff231e14c089b1b26211ec685f6ad228 SHA-1: 992abaca84a590f9c3a51ca34e5d3b8b6e68bb87 SHA-256: 7bcc9a7d10f68f4356c079161c1156bfc6b36e79bc498d353e31317812f92ebe
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wb?keyword=carrot%20cake%20recipe%20botw PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4461744/normal_600388da08407.pdfIn PDF document text
    • https://cdn.sqhk.co/digubamot/i6ggSIj/toon_blast_update_not_available.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481539/normal_60121e6e7d8b3.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/avg_free_windows_xp.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/idicc5i/benelitijifejowani.pdfIn PDF document text
    • http://sanadewa.iblogger.org/26633793570.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380070/normal_600ba3315b57b.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/jemisajoda/the_hand_of_fatima_edge_book_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/workbook_in_excel_spreadsheets.pdfIn PDF document text
    • http://fonawemosel.epizy.com/19615505358.pdfIn PDF document text
    • http://jojomuge.epizy.com/sajajirofibuj.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/genero_dramatico_para_nios.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/89945091402.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/kdoqi_guidelines_ckd_classification.pdfIn PDF document text
    • https://s3.amazonaws.com/gopifu/descent_into_avernus_google_drive.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_off0000dcf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF9 4920 bytes
SHA-256: e84036802e73517c83f0ec51f408a2564ebf36765b91f155ae77573923be9e5c
font_01_sfnt_off0000edd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD4 10596 bytes
SHA-256: 9eca3e5c2dc1e0edafe79d54137df72c676fe662237c7841dccb5e727b6d6b73