Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae10827d968c6e9…

MALICIOUS

PDF

78.6 KB Created: 2021-02-20 03:40:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d60ecb866ac37cc9f212094a7b30687a SHA-1: d523bd4b9855bfd048d03c19dbe68fe832a68e6b SHA-256: eae10827d968c6e9c04b6dbe4370f095b9286c9e1ca12748fde97319ff970bd5
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 pointing to Weebly-hosted PDFs, suggesting a link farm or redirection scheme. One prominent URL, 'https://maypoin.ru/strik?utm_term=jbl+flip+2+battery+online', appears to be part of this infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/strik?utm_term=jbl+flip+2+battery+online PDF link annotation
    • https://xesanojazal.weebly.com/uploads/1/3/0/9/130968931/9293872.pdfIn PDF document text
    • https://bulabameworiw.weebly.com/uploads/1/3/4/0/134096114/5355933.pdfIn PDF document text
    • https://remogomati.weebly.com/uploads/1/3/4/7/134748537/71922907cad.pdfIn PDF document text
    • https://dapevorejux.weebly.com/uploads/1/3/4/6/134695165/gafeto_pitadoparonumi_kemesuzunizexe_juzorozunijoda.pdfIn PDF document text
    • https://mozufakumijisa.weebly.com/uploads/1/3/5/3/135333945/wewiz.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/6e11252c5b.pdfIn PDF document text
    • https://cdn.sqhk.co/diwiporeb/dXMjfja/vagexasaxefo.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/gfiiFjb/inner_ear_infection_symptoms_child.pdfIn PDF document text
    • https://kuburabet.weebly.com/uploads/1/3/4/3/134362545/ce0a036.pdfIn PDF document text
    • https://gixunilaw.weebly.com/uploads/1/3/1/8/131856646/gokas.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/turip/kiguworufavodeg.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/partnership_agreement_format_in_bengali_language.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/88240315461.pdfIn PDF document text
    • http://puwukuju.epizy.com/cpls_course_tactical_tools_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/disney_family_feud_game_box_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/siwaxodemizipusuviwisaxuw.pdfIn PDF document text
    • http://madojizekikozor.epizy.com/assistive_easy_touch_tool_apk.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_off0000ede5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE5 5080 bytes
SHA-256: 90b261a8d862ed7b38c27e3c03099eff6a3142f597deac5bbe6870afea216928
font_01_sfnt_off0000ff46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF46 15756 bytes
SHA-256: dfec0f74c9efab951655fb907ae328981bd580410629778d3b238ba7ce1dd3fc

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