Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed0e70df13c33c1…

MALICIOUS

PDF

81.7 KB Created: 2021-04-05 10:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 67ef90eee2ad2c678805ad7f00fb6ba5 SHA-1: 7d07fd5c5dc89813eda0c354abcc8ddaf9de66a3 SHA-256: 9ed0e70df13c33c13c497792f56210450b6e174bc9277aaf8ab5cdcbee1813f1
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one specifically identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document's content and structure suggest it's designed to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://dugedepap.ru/award?keyword=que+es+bienestar+psicologico+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479684/normal_60343b06c2e4a.pdfIn PDF document text
    • https://cdn.sqhk.co/levuzivanu/3gfygjX/tuberculosis_vaccine_invented.pdfIn PDF document text
    • http://nifowog.iblogger.org/journal_sportif_algerien_competition_en.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383146/normal_5fff39081c451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474759/normal_602489bdd82f7.pdfIn PDF document text
    • https://tizukusijevawus.weebly.com/uploads/1/3/4/4/134454617/4479668.pdfIn PDF document text
    • https://sufotope.weebly.com/uploads/1/3/0/7/130775917/zekatuve_zuwumamu_nolupodupozutof_wanipevusixofi.pdfIn PDF document text
    • https://cdn.sqhk.co/nowazedadara/Mviclig/zoologia_artropodos.pdfIn PDF document text
    • http://xigosilefonaboj.iblogger.org/tulaweb.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/jgGhggd/tasks_notes_for_ms_exchange_ios.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485450/normal_60436e3495ae9.pdfIn PDF document text
    • http://xilevidesidol.22web.org/spotify_mod_apk_terbaru.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/ronenitevodo/93576227893.pdfIn PDF document text
    • http://rafopaju.rf.gd/87495095006.pdfIn PDF document text
    • http://xukenefurirog.epizy.com/tv_buyers_guide_2019.pdfIn PDF document text
    • http://deroselewem.epizy.com/paxidujotetasumeruwanuref.pdfIn PDF document text
    • http://nimokum.rf.gd/mla_citation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/september_2019_calendar_printable_free.pdfIn PDF document text
    • http://jowadonexasida.epizy.com/teoria_atomica_quimica.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/28993658130.pdfIn PDF document text
    • http://wazokikenida.rf.gd/24518728503.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/desire_a_history_of_european_sexuality.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_off0000fea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA5 5524 bytes
SHA-256: b15dcc0f25f3c46e4ebee9ce56de5f92d063b80bafbec58dc14f26fa6d55ebfa
font_01_sfnt_off00011174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11174 11616 bytes
SHA-256: 2ccda0e03bfb6ce053bda37f931c0587ec0f10d912378fc0383f028c6b7104a4

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