Malicious PDF — malware analysis report

Static analysis result for SHA-256 313764217de954e5…

MALICIOUS

PDF

71.5 KB Created: 2021-03-22 11:51:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9da7ea8d543539fc7d3c78903bf312ff SHA-1: 77953fd33e102589cdbd0b58abbf3d46f89acf49 SHA-256: 313764217de954e573536f6c126df83125d83c61c8e048ff6e033e62201be899
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=knotty+pine+paneling+4x8+sheets In PDF document text
    • https://cdn-cms.f-static.net/uploads/4492555/normal_5fd139928500c.pdfIn PDF document text
    • https://numilobes.weebly.com/uploads/1/3/4/2/134235742/3445543.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369168/normal_6022f5fe2f557.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379974/normal_5ff340dd7a3a6.pdfIn PDF document text
    • https://gileledera.weebly.com/uploads/1/3/0/8/130874536/dalibetekavovigod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465386/normal_60543222a29c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463287/normal_601489e62a496.pdfIn PDF document text
    • https://jaxoruxevag.weebly.com/uploads/1/3/1/6/131606876/6073409.pdfIn PDF document text
    • http://pepariravifaza.getenjoyment.net/ielts_speaking_questions_2020.pdfIn PDF document text
    • https://koniwosusuzese.weebly.com/uploads/1/3/1/8/131856176/9180317.pdfIn PDF document text
    • https://zatikavetix.weebly.com/uploads/1/3/2/3/132303242/kenuvaveloj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vofumutuziwuka.rf.gd/vovelesigos.pdfIn PDF document text
    • http://gasadilipebafup.rf.gd/majikofamenap.pdfIn PDF document text
    • http://popuzavefigud.epizy.com/pedajadetij.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/sony_a5100_manual_guide.pdfIn PDF document text
    • http://zarusorujot.epizy.com/87976763506.pdfIn PDF document text
    • http://kosofinubew.epizy.com/soxifabewasujewabimi.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/mogikimilewavowesap.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/lurovowunaxuj.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/23551589438.pdfIn PDF document text
    • http://zukomakiduw.myartsonline.com/lumipirodawufev.pdfIn PDF document text
    • http://zizidamikedug.epizy.com/botulisme_humain.pdfIn PDF document text
    • http://buvetixebofexe.epizy.com/how_to_make_big_money_on_gta_5_stock_market.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_off0000d97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97E 5408 bytes
SHA-256: 41bdf91478b965609c11cf62ac9ec1c49090c8836f82dfe7ca332b21f8c76cbf
font_01_sfnt_off0000ebfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFC 10752 bytes
SHA-256: 02a565f7cd59ecb282706ca2cada96a84e37421eb0706f3102c03d214dde9134

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