Malicious PDF — malware analysis report

Static analysis result for SHA-256 be4c8d03ccb394d6…

MALICIOUS

PDF

65.4 KB Created: 2021-01-26 04:01:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 360aa500694df3350ce4f2a75a5591a9 SHA-1: 0c68dd164b1754516ef1a5b87e23b69114cb6c79 SHA-256: be4c8d03ccb394d6508c1c57cfdd4b06524df9cbe737ccfa1dfb9e6f398fdb9f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://leonvi.ru/123?utm_term=home+decorators+collection+faux+wood+blinds+installation PDF link annotation
    • https://cdn.sqhk.co/samidabaxik/ahajiu9/53261683876.pdfIn PDF document text
    • https://dodilepu.weebly.com/uploads/1/3/4/4/134444379/kugatesaruwezu.pdfIn PDF document text
    • https://murasujudadalox.weebly.com/uploads/1/3/5/3/135338307/zagojot-ripuguli.pdfIn PDF document text
    • http://waxinexedodupij.22web.org/anticonformity_krystal_meyers_lyrics.pdfIn PDF document text
    • https://balixilime.weebly.com/uploads/1/3/1/3/131398392/jibixelekifawo-lalewitibuwunon-jezexudukililu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484375/normal_5ff935c28c957.pdfIn PDF document text
    • https://cdn.sqhk.co/kewukapugino/Sib8hck/bosumaxasinuwod.pdfIn PDF document text
    • https://xiforamuti.weebly.com/uploads/1/3/4/6/134611992/9955676.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502906/normal_5ff26b7d94353.pdfIn PDF document text
    • https://sunivisoxeban.weebly.com/uploads/1/3/4/4/134493344/3978314.pdfIn PDF document text
    • http://vukabuv.22web.org/java_for_mac_os_mojave.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/dupula/downer_edi_limited_annual_report_2019.pdfIn PDF document text
    • http://dozonox.epizy.com/repitosole.pdfIn PDF document text
    • http://bosefijov.epizy.com/chevrolet_aveo_2004_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/securecrt_file_from_server.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_off0000c3b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B7 5428 bytes
SHA-256: 72981c5ba25b3cc857e1a21ef5dcb82b8ccd29819df0a2950bd5f1f901bb5b62
font_01_sfnt_off0000d622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD622 10052 bytes
SHA-256: 629c30533f43873c13d209acf37379bb687719b0901bb7826697d4f79db0bfad