Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab17ce429fd9362…

MALICIOUS

PDF

70.5 KB Created: 2021-02-12 00:48:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 98ffd45ff231a3dd177ee5d22852b9d7 SHA-1: e73cdeed6660f40e44de1266e0daddb765ccbf97 SHA-256: fab17ce429fd9362c30c201329da9a1bb32ceef4f44e7e6f9a9b18f8e8b2673a
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/wb?keyword=chk%20file%20format In PDF document text
    • http://helpverifybadges.com/car_sale_agreement_sampleiamqn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415543/normal_5fdbbe53b7046.pdfIn PDF document text
    • http://dazinifuxevoji.22web.org/501974063.pdfIn PDF document text
    • http://pannochki-art.com/timberjack_240_manual8kxfn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485580/normal_60060d1565bc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450724/normal_60111b8bd4407.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/rikolesafuwofar/carrier_30gxn_chiller_troubleshooting_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/77363958569.pdfIn PDF document text
    • http://sajetubaj.epizy.com/cardinal_directions_worksheet_third_grade.pdfIn PDF document text
    • http://tarusuja.epizy.com/baseball_card_template.pdfIn PDF document text
    • http://beduxuluwuniva.rf.gd/26172630776.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/josuteledolufivepapu.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/cronograma_obra_ms_project.pdfIn PDF document text
    • http://riwesanis.epizy.com/kibekirulabuludunemulore.pdfIn PDF document text
    • http://jewexaruwibel.rf.gd/76880331306.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_off0000d8c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C5 4800 bytes
SHA-256: 183ce4bbb7cd226242b891756cc11d15754cb36812afd8003509101d02f3fca2
font_01_sfnt_off0000e8e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E3 10772 bytes
SHA-256: 07bed5b60282e1feb9ec64d740a7876a229cf66cff719043ef4aaafc0aa1bfde