Malicious PDF — malware analysis report

Static analysis result for SHA-256 14521f99d6c11974…

MALICIOUS

PDF

65.3 KB Created: 2021-02-14 10:47:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 048e5bd22c422982e51115642514a432 SHA-1: 181d53d83c290e70a4d06b04eca6433bc33961fc SHA-256: 14521f99d6c11974c2bef3a70bbf31570f006f42eed6162ea0c1c6959075e3c5
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 potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the presence of numerous external URLs suggests the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://bologen.ru/wix?keyword=mckelvie+intermediate+school+bedford+new+hampshire%25EF%25BF%25BC PDF link annotation
    • http://goodnatural.space/tres_veces_tu_libro_completo_en_espaololo9l.pdfIn PDF document text
    • http://safagiko.iblogger.org/sweet_love_messages_for_her.pdfIn PDF document text
    • https://gotizede.weebly.com/uploads/1/3/2/6/132695714/jusedaseti_bekevibesu.pdfIn PDF document text
    • http://copyrightram.net/pomigojozefateboxokomukueon.pdfIn PDF document text
    • https://nipobajomofak.weebly.com/uploads/1/3/4/6/134641158/d654b745.pdfIn PDF document text
    • https://lovivusopeme.weebly.com/uploads/1/3/6/0/136095788/wileviwufedarad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lugirike.epizy.com/casper_full_movie_free_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/theoretical_and_experimental_probability_worksheet.pdfIn PDF document text
    • http://rojotafapexaj.rf.gd/nerunozupelinubaxarag.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/wewexajaxiba.pdfIn PDF document text
    • http://wepirizifomonij.epizy.com/drp_template_document.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/vajet.pdfIn PDF document text
    • http://latilofu.rf.gd/b._ed_2019_form_punjab.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/88281525775.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_off0000bcd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD4 5760 bytes
SHA-256: b81b49c6bc49b656a808a7919239e4a1564f12dd0c204bc4b4ca8fca6bb82e21
font_01_sfnt_off0000d06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD06A 10976 bytes
SHA-256: 2fc17f043ccb5a7539ba8e8da4b0f0aeefe03532d8d111d3cec1ecb6b4d0d835

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