Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a291ee3942a3dc2…

MALICIOUS

PDF

85.8 KB Created: 2021-05-16 14:57:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 1d76daf7fdea658a72590c17ae5ce489 SHA-1: 188b7a1ff100a47f2cf5a3cc616e90690d67cb9f SHA-256: 3a291ee3942a3dc25f394378dd9b0262d74a30a3a3ff3dc578418b94b44a1fc3
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan-like behavior. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content or for SEO manipulation. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • 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.
  • 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/strik?utm_term=company+of+heroes+2+non+steam+mods PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369187/normal_6020737678653.pdfIn PDF document text
    • https://gogozanep.weebly.com/uploads/1/3/4/6/134670655/jomasewitowe_mapipiwisen_vugasenijo.pdfIn PDF document text
    • https://javesuput.weebly.com/uploads/1/3/0/8/130873829/4ca5129de464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417222/normal_6017222eb33ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485450/normal_601b0b385deb6.pdfIn PDF document text
    • https://xabetibupu.weebly.com/uploads/1/3/0/7/130738966/podegegavejo.pdfIn PDF document text
    • https://dujomujur.weebly.com/uploads/1/3/4/8/134883281/2561204.pdfIn PDF document text
    • http://tilikef.mygamesonline.org/kejinoxa.pdfIn PDF document text
    • http://zaneralisobiwi.22web.org/class_12_cbse_chemistry_practical_book.pdfIn PDF document text
    • https://disovipogazita.weebly.com/uploads/1/3/1/3/131398104/4502284.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_600d1c67cb1e4.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/totirikiba.pdfIn PDF document text
    • https://bevifosadorafot.weebly.com/uploads/1/3/1/8/131856546/0407475aa140.pdfIn PDF document text
    • http://dofegogojewipo.iblogger.org/bukugujosabukoxiga.pdfIn PDF document text
    • http://susarivusu.22web.org/y_x2_4_graph.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/genuwafeviromebigapotor.pdfIn PDF document text
    • http://ruwazumusef.scienceontheweb.net/general_characteristics_of_amphibians.pdfIn PDF document text
    • https://baduxobenef.weebly.com/uploads/1/3/0/7/130739850/f75ab46.pdfIn PDF document text
    • http://tetupamino.mywebcommunity.org/laxonikaniduj.pdfIn PDF document text
    • https://fekazivijiwawad.weebly.com/uploads/1/3/4/6/134687088/420169.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://zuvuzevo.atwebpages.com/network_attached_storage.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/music_band_na_karo_mp3_song.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/format_sql_query_sql_developer.pdfIn PDF document text
    • http://xowofalofuzuxis.epizy.com/binary_numbers_worksheet.pdfIn PDF document text
    • http://zanoxekuniz.epizy.com/35726091340.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/67865949872.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_off00010352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10352 5244 bytes
SHA-256: d93c04cad0162d2a1e3a6364cc24fcea2d73197a8c5f96f9133baee418130269
font_01_sfnt_off000114fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114FB 11240 bytes
SHA-256: e682185c29856926335d4ac5ab32ba7669cf169032160cf691c735b2951986c6
font_02_sfnt_off00013b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B5F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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