Malicious PDF — malware analysis report

Static analysis result for SHA-256 e796b34f6fb59aab…

MALICIOUS

PDF

76.9 KB Created: 2021-03-01 16:00:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f21ea69df44fe3d39e487a97d72156c2 SHA-1: e72371582f1dba5464a341ee5c44677626967b1f SHA-256: e796b34f6fb59aabec8175d6591aa90ee256853d82a0af5aafd3ba0992aa9315
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document contains numerous external links, with one pointing to 'https://ponafet.ru/strik?utm_term=what+is+a+leadership+style+in+nursing', likely a phishing or scam lure. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a phishing or content-scraping attack.

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://ponafet.ru/strik?utm_term=what+is+a+leadership+style+in+nursing PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4483856/normal_5ff658ddd4920.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455907/normal_60100193c6a94.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/Jsjcdz3/burrito_bison_launcha_libre_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448113/normal_60019f06d8712.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449984/normal_5ff8c4a17d2c5.pdfIn PDF document text
    • https://cdn.sqhk.co/jezaziritav/f7gdKEN/xmeye_setup_for_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468828/normal_5fe189f682bd8.pdfIn PDF document text
    • http://jonebukusopovet.mygamesonline.org/university_of_colorado_denver_electrical_engineering_faculty.pdfIn PDF document text
    • https://kazowutulegopos.weebly.com/uploads/1/3/5/3/135324393/9463353.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379363/normal_5ff598c1a0011.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393762/normal_5fec31fc5c7af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418000/normal_60282126488ca.pdfIn PDF document text
    • http://mirijesuwakug.sportsontheweb.net/73466683676.pdfIn PDF document text
    • http://kejoxemubogese.mywebcommunity.org/majev.pdfIn PDF document text
    • https://porujeworor.weebly.com/uploads/1/3/2/8/132814718/7056218.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/pasawe/ou_worksheets_studyladder.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/49770736286.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/jamadar_final_answer_key_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/circular_process_flow_chart_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/15277575027.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_off0000f002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF002 5336 bytes
SHA-256: 734fb4a5e8681c43b570664e366b8708006b1dfeab826cd4b3728fdcd9491167
font_01_sfnt_off00010234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10234 10640 bytes
SHA-256: 9af255168f6f52676cc0d247a319458a0cb51a074492804338116ad23092b4cb

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