Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcb27f5981f1756e…

MALICIOUS

PDF

71.3 KB Created: 2021-02-26 19:35:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e9d01dc36e8d327b004e08582cbcd732 SHA-1: be0b320b6d585915605c91d2c26c20bd442ed561 SHA-256: dcb27f5981f1756eedc096e1c5fe7ecf45fc4f02f79924e39068d305a4da8a85
156 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://fokemale.ru/award?keyword=jesus+was+a+little+boy+too PDF link annotation
    • https://xitolomeka.weebly.com/uploads/1/3/4/0/134012462/5690706.pdfIn PDF document text
    • http://limecash.xyz/titoxitinifoddym3k.pdfIn PDF document text
    • http://shoes-storie.club/voluvarabukijiguzapidinvz.pdfIn PDF document text
    • https://midumusifefo.weebly.com/uploads/1/3/5/4/135401272/zowodenaxirag-bexerewebudumaz.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/muvemasoxaji/91837728291.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/modetasikusorijabagusew.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/online_emi_calculator_free.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/invoice_template_iwork.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/color_matching_worksheet_for_toddlers.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/enduring_power_of_attorney_guide_wa.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/aged_pension_form_online.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/beturosasatozu.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/hotel_reservation_confirmation_letter_sample_format.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/8870166826.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/17983208531.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_off0000dbbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBB 4908 bytes
SHA-256: 6f28dcd079feb07d6b0fd2a2972308a049f0f114ac0ca6a6be0acde158bfb6cf
font_01_sfnt_off0000ec94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC94 10428 bytes
SHA-256: 586dbfd7a4707dfbf963a8e9cbeb3cd5fbe5057e96e5ee2e3e03ffea94e40a3f