Malicious PDF — malware analysis report

Static analysis result for SHA-256 0817f3a514f8883f…

MALICIOUS

PDF

82.8 KB Created: 2021-03-16 16:48:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c1644ceb236631b103ed5d94aded5e73 SHA-1: 73af6a5300c70e56a90286409857420a8d87a4e5 SHA-256: 0817f3a514f8883f5a4a81f5833a883ed49e78f217aa73144759424dd8e28573
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://leonvi.ru/123?utm_term=atoms+and+elements+worksheet+answer+key PDF link annotation
    • https://murufafutebe.weebly.com/uploads/1/3/4/4/134473477/9d359a8365.pdfIn PDF document text
    • https://firizuvamo.weebly.com/uploads/1/3/4/6/134618899/togazo.pdfIn PDF document text
    • https://wuwotozon.weebly.com/uploads/1/3/4/3/134315251/mujetixusijasanigala.pdfIn PDF document text
    • http://magnitoli-2ekran.site/76763480170s4odd.pdfIn PDF document text
    • http://ecoservice-vlad.ru/zuxozefelijodat43upj.pdfIn PDF document text
    • https://minadefimufev.weebly.com/uploads/1/3/4/6/134635785/jidutulogi_nuzibufudasa_xinewatubuzug_saxuxufekufi.pdfIn PDF document text
    • http://1xbets-regs.site/32803554145c38hs.pdfIn PDF document text
    • http://madewithsunshine.com/zubofuwabhicd.pdfIn PDF document text
    • https://pekatizofu.weebly.com/uploads/1/3/0/7/130739174/444f43.pdfIn PDF document text
    • http://netewe9.xyz/98560028232fbn3q.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/muwemivumazulax/livro_avivamento.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/jurumuko.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/supuvexafujizufib.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/sublime_text_3_auto_format_shortcut.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/contrato_de_anticresis_bolivia.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/babetorusetizadizeg.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/pawajaduxulemaripegu.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/lanolikusunefesilagol.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/57058636604.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/free_consumer_report_on_refrigerators.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/61401970083.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E6 5312 bytes
SHA-256: 71336453a9249bbe1057d46b5f782ca3cff407f4b53e1be0b89b14e1aeeca4aa
font_01_sfnt_off000117d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117D9 11168 bytes
SHA-256: 4cfcdf5a8189e569e7f94573742b22813887b2a1af861a4b233aa4c29e8d6acf

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