Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ed254f80dddda8…

MALICIOUS

PDF

80.8 KB Created: 2021-03-28 10:05:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 19aaa05786d10ad7d4e89fb3aebd9684 SHA-1: 58a3952003d6fc564bbf9af1731bf23eeedb3c0d SHA-256: 32ed254f80dddda85ee36d87ed02b14ae7fa0355129252546102186a5bcea174
194 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable hosting services, suggesting a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/wix?keyword=witch+of+blackbird+pond+study+guide+pdf PDF link annotation
    • https://pepadamive.weebly.com/uploads/1/3/4/4/134468065/gudulorubimu.pdfIn PDF document text
    • https://lanekugufer.weebly.com/uploads/1/3/5/3/135351315/4338325.pdfIn PDF document text
    • http://miwodenexiz.iblogger.org/23839449880.pdfIn PDF document text
    • https://nosisakapu.weebly.com/uploads/1/3/4/7/134773138/8472759.pdfIn PDF document text
    • https://kifesajisibak.weebly.com/uploads/1/3/4/8/134884742/848d6f5e87ad4fa.pdfIn PDF document text
    • http://prizinsta365.online/what_does_it_mean_when_the_discriminant_is_less_than_zeronmj6a.pdfIn PDF document text
    • http://gogotmif.space/hit_em_with_the_woahkmg0x.pdfIn PDF document text
    • https://viwomesaw.weebly.com/uploads/1/3/4/4/134472777/fetumijavoxow_namesi.pdfIn PDF document text
    • https://nixuxani.weebly.com/uploads/1/3/4/4/134433038/5baa6e7ba2.pdfIn PDF document text
    • http://wozonos.22web.org/13027543147.pdfIn PDF document text
    • http://cyberghost.store/cisco_sg300-28p_specsj7c23.pdfIn PDF document text
    • https://vewiwuxipax.weebly.com/uploads/1/3/2/6/132681682/1438848.pdfIn PDF document text
    • http://sukojas.22web.org/classifying_living_organisms_worksheet.pdfIn PDF document text
    • http://begdas.space/battle_angel_alita_mars_chronicle_how_many_volumesdnkr5.pdfIn PDF document text
    • http://nefritthebestthing.site/how_to_report_disposition_of_partnership_intereste82j1.pdfIn PDF document text
    • https://ruzowevo.weebly.com/uploads/1/3/1/4/131453610/risenuzepubel.pdfIn PDF document text
    • https://lulotileja.weebly.com/uploads/1/3/0/8/130873917/d8d8c50b7962511.pdfIn PDF document text
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/winalelofifipo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://lemujiv.epizy.com/english_to_filipino_translator_apk_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/hayward_power_flo_matrix_1hp.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/end_of_project_evaluation_report_format.pdfIn PDF document text
    • http://givaradipokez.epizy.com/fuzutat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF19 5620 bytes
SHA-256: 67fc12494d510b4adc99c09bcc71203b40bd3607e991efdb32d0527f94131a8d
font_01_sfnt_off0001023b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023B 10992 bytes
SHA-256: 9afc8a3f0c85e8b4ab331948e76bd952832c40b0182e4be480743fa608287004
font_02_sfnt_off000127b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127B0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3