Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc4ab4da0cf4c07…

MALICIOUS

PDF

64.7 KB Created: 2021-02-10 05:22:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6cb7461611713069c2c82176fb1a7eb9 SHA-1: da9321afd5b1652d85eb09df776441c4ee6102fc SHA-256: 5cc4ab4da0cf4c07b1c1a3bd46c43f41d3b9aee288969779967b298a7804edcf
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/aws?utm_term=microsoft+powerpoint+themes+free++2007 In PDF document text
    • https://veduwasa.weebly.com/uploads/1/3/1/6/131637496/3207886.pdfIn PDF document text
    • https://wodanosivowifig.weebly.com/uploads/1/3/4/5/134593279/bifomidiruwubolegik.pdfIn PDF document text
    • http://naturka.space/avery_cd_labels_template_5931_freeri9rh.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/3ovJLvf/hair_color_for_passport_picture.pdfIn PDF document text
    • https://cdn.sqhk.co/safubuguva/a3Ggjpv/hp_smart_printer_password.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/gTqlibc/9450166613.pdfIn PDF document text
    • http://mmuuue.space/84795472847twz42.pdfIn PDF document text
    • https://cdn.sqhk.co/muribirigim/jaNiayJ/dungeon_defenders_3_kickstarter.pdfIn PDF document text
    • http://1yamal.space/bewawiguragoz30mwe.pdfIn PDF document text
    • http://pinerapidsrr.com/84579918155f5mkd.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/negonanopix/norofodo.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/xupewezagonemexifame.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/laws_of_electrical_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/zowowadixebegixe.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/agrobacterium_plant_transformation_protocol.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_off0000c23d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC23D 5464 bytes
SHA-256: 5306f3e76af06243ee1a478c74fe03a3f452fa77e38e2a7ab02ebf153d779bca
font_01_sfnt_off0000d4d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D9 9616 bytes
SHA-256: 26ed4021ab19e769ed347cb8814064f021a544d315ed4d5dc1cdfe74dafc6a8c