Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d43109904791595…

MALICIOUS

PDF

79.4 KB Created: 2021-04-04 23:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f6a784117cc40b3d4b9478c143ada844 SHA-1: 1ee01e67d441e8a08c32e79cd6e87fd3d0dcb241 SHA-256: 2d4310990479159508e3c5b98efae9dc5b0a9e9c9786a89d570178da0107ffb6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=survey+remover+online+crack PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366364/normal_605b50fd08a8a.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/26997732391.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/rehabilitacja_po_alloplastyce_stawu_biodrowego.pdfIn PDF document text
    • http://saxosoxajivovud.medianewsonline.com/tratamiento_de_anemia_normocitica_normocromica.pdfIn PDF document text
    • http://kojewotezigu.iblogger.org/44614397545.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403131/normal_5ff2b11985ed2.pdfIn PDF document text
    • http://gigogon.22web.org/autocad_mechanical_2020_manual.pdfIn PDF document text
    • https://nolilozeto.weebly.com/uploads/1/3/5/9/135957670/ziwozemi.pdfIn PDF document text
    • http://beamorem.com/python_list_remove8snj0.pdfIn PDF document text
    • http://mrshadow.net/simple_business_plan_example_for_coffee_shopc1ycx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413712/normal_6003ecba149eb.pdfIn PDF document text
    • https://tumonejaw.weebly.com/uploads/1/3/6/0/136086042/dutojabujit.pdfIn PDF document text
    • http://kelirifuwa.22web.org/nozivavakolagapubipanu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386829/normal_5fcfb39fc9531.pdfIn PDF document text
    • http://joy-todays.online/3063826367757psq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391920/normal_603e97b48bbcb.pdfIn PDF document text
    • http://girlita.space/bach_concerto_for_2_violinsjin2f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mobuloremade.rf.gd/20006964501.pdfIn PDF document text
    • http://bojefej.epizy.com/adolescent_reproductive_health_problems.pdfIn PDF document text
    • http://bezafesu.rf.gd/diccionario_ingles_espaol_oxford_precio_porrua.pdfIn PDF document text
    • http://xetatiwu.rf.gd/science_bowl_biology_questions.pdfIn PDF document text
    • http://vosizovivefa.epizy.com/keto_diet_plan_food_list.pdfIn PDF document text
    • http://kemesid.onlinewebshop.net/arvind_subramanian_books.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7DB 5096 bytes
SHA-256: 798ea4ddfc199d60ab3c4c5d9440b51e5e3a23481ba8d816e6902165c94b204d
font_01_sfnt_off0001092e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092E 11556 bytes
SHA-256: e5e32d078f1d6625860a0d8dd9a35243eaf2651faed5ec4f66ae2a311a5052b6

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