Malicious PDF — malware analysis report

Static analysis result for SHA-256 55f3ee2009bc64c2…

MALICIOUS

PDF

95.5 KB Created: 2021-06-24 06:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 04e31aebf6c45bf5ad16d0cf9f855af1 SHA-1: 930e6139d3be7cc6b29a057eb2ce9cedf45105a3 SHA-256: 55f3ee2009bc64c212fd0cb86164ce34a9189a4457e29bcc70f82c2983181103
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links pointing to various domains, many of which are hosted on compromised CMS upload storage or appear to be part of a link farm on disposable hosting. These characteristics suggest the document's primary purpose is to redirect users to malicious websites, likely for phishing or to download further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://baohanhranghm.com/upload/img/files/dimobazanowobabi.pdf In PDF document text
    • http://adaviestransportltd.com/userfiles/file/soverutafigidefan.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160849ed3b655c---mosulez.pdfIn PDF document text
    • https://educationindiajournal.org/ckfinder/userfiles/files/lugofiminezivorepezijawif.pdfIn PDF document text
    • http://contextuae.com/resimler/files/xemikapuluxizusoga.pdfIn PDF document text
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/9fe74ec0e300699d918b791797b07242/14479979506.pdfIn PDF document text
    • https://corpusbg.com/files/fck/file/gaxibek.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/126b41f6e62e56238fd9af6a2e24dc6c/34700380749.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4bc7f3bff1---15536961932.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/10755927700.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160be43463d94c---lugidefule.pdfIn PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/99fd98c853979eae1ff9a59ffb29157b/75795200150.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/kimuginexozoviwunadub.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b9ee1126bf888a053af860f3f8615a12/fepibaxitojukevatitaf.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160953007c1dd9---loxap.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/160908fe395655---kenodabezalijobob.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0982bb750---25979706800.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=monster+hunter+weapon+iconPDF link annotation
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11134 12196 bytes
SHA-256: 479926e4ee05b540bf71717aeb9889ab87c2359532384d7fa0b22b4fce8c60cc
font_01_sfnt_off00013969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13969 5084 bytes
SHA-256: e860231561af1f3bda6a2d353325eaa1c6546b8e171309f7c7076792c43a519c
font_02_sfnt_off00014acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ACB 11652 bytes
SHA-256: 7dece6818571c4c5f4fb7eeecfa4cf226b0b78e32e384b222820bf0a5f5c750a

Open this report in the interactive analyzer, or submit your own file for analysis.