Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ab4fe71c5dc5ecf…

MALICIOUS

PDF

74.0 KB Created: 2021-02-11 17:54:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 33aa590b894ef753fc4edf82f1482263 SHA-1: c98ae83c11a2a03a91cf6533e240ae9bc052d59c SHA-256: 1ab4fe71c5dc5ecfb6398cfa1153dc867b3f91c8ddd51426d694841553f4b1a5
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://jottigo.ru/123?utm_term=mine+taylor+swift+release+date PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461219/normal_5fe6f03ecdd05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461767/normal_5fd73fd1b40f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_60248885ac46d.pdfIn PDF document text
    • http://omerkatanalp.com/98685029502631i1.pdfIn PDF document text
    • http://eliyalte.com/besakovoxemipn0ti8.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/mejobu/78219083497.pdfIn PDF document text
    • http://zasidolejilu.epizy.com/get_your_guide_tour.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/zavijironiribitenawikuvif.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/77508593325.pdfIn PDF document text
    • http://nogamijabuwemi.rf.gd/acrylic_glass_sheet_dimensions.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/gs_auto_clicker_3._2._1.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/70761931836.pdfIn PDF document text
    • http://gijabakupukuj.rf.gd/alphabet_and_their_sounds.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/zewune.pdfIn PDF document text
    • http://medojowibapij.epizy.com/zujepalebeme.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_off0000e569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE569 5100 bytes
SHA-256: 9aa0900ec25005ee041d80033cd53464ecc447c4d4e232c419b808758939aef9
font_01_sfnt_off0000f6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F1 10648 bytes
SHA-256: 7c0b35caae6e4fa2e2dd0aa3cf200994bb2e19b00ab5a429aa366c1fb03d334e