Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7f25ec2aa522336…

MALICIOUS

PDF

102.0 KB Created: 2021-05-06 04:28:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 75e00e435812c8aa2a535d233746890b SHA-1: e853f141aa094db522b99b7e29e96a5ddd0fcb1e SHA-256: c7f25ec2aa522336ae4b40b1d217079fc868431982d7e5ddc9a4ee64ec2aebfd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to PDF files on various domains, suggesting a link farm or redirection scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or hosting malware. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=what+is+ancient+greek+religion+called PDF link annotation
    • http://lukufogud.getenjoyment.net/nuzukixoxexafu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401976/normal_60026762c2942.pdfIn PDF document text
    • https://kitetunevoneg.weebly.com/uploads/1/3/4/7/134703129/9382848.pdfIn PDF document text
    • https://kovibokasekur.weebly.com/uploads/1/3/4/8/134880184/jukejifodusojak.pdfIn PDF document text
    • http://milesatel.mygamesonline.org/pebibikini.pdfIn PDF document text
    • https://gatepeduvemixif.weebly.com/uploads/1/3/4/6/134669895/jagozini-dinemamemokuk-kenovotego.pdfIn PDF document text
    • https://xasigali.weebly.com/uploads/1/3/4/3/134363336/gogoxojuvolugisamik.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/3_phase_voltage_in_kuwait.pdfIn PDF document text
    • http://majexifavel.scienceontheweb.net/fadunulotefexapuxefebaka.pdfIn PDF document text
    • https://ledegukumimajem.weebly.com/uploads/1/3/5/3/135393042/7558375.pdfIn PDF document text
    • https://vomoxolakixirum.weebly.com/uploads/1/3/1/4/131438067/lojijuve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421461/normal_606d583924107.pdfIn PDF document text
    • https://salewuso.weebly.com/uploads/1/3/1/3/131379029/156450c2c.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/voropa/ethernet_adapter_usb_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/confirming_a_meeting_email_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/onkyo_ht-r340_watts.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/hello_adele_chords_keyboard.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/abhishekam_audio_songs_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/muzoni.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_off00014b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B45 5276 bytes
SHA-256: 6b06df4454c2a9fe3a182cb77b0061d6cf0f6f549cfece4571ad0fea83af9aff
font_01_sfnt_off00015d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D3B 13888 bytes
SHA-256: dbb3b3550d5b18d49b20bc675614031c03f5462ad6d51fcdf59a09f6953989dc

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