Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db2b709dfcdb345…

MALICIOUS

PDF

82.1 KB Created: 2021-05-15 17:12:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fad04b323a6b61edd2f40e5ea677fdc6 SHA-1: d47cf19eabb4565a3dfbdcd893985cdfbeb663b5 SHA-256: 2db2b709dfcdb3457c985baa3ed1e72028fb754e420ab3d0ae26f1a1046b9528
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 0.9995

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://gimoguvi.ru/strik?utm_term=how+to+take+firework+pictures+with+nikon+d3400 PDF link annotation
    • http://mawazokaf.iblogger.org/what_kind_of_transmission_fluid_does_a_ford_escape_take.pdfIn PDF document text
    • https://sikiwakasizo.weebly.com/uploads/1/3/5/3/135318116/surolawotin-xedijarexatuvu-kugefunobim-motem.pdfIn PDF document text
    • http://suvekitubexeso.getenjoyment.net/10258464884.pdfIn PDF document text
    • https://larekupexog.weebly.com/uploads/1/3/4/8/134884129/misav_bojebovirebod_fomunusanadalor.pdfIn PDF document text
    • https://polovetanofup.weebly.com/uploads/1/3/5/3/135330247/9754946.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409801/normal_602294f500943.pdfIn PDF document text
    • http://zijiwox.iblogger.org/tesogawanizinavovix.pdfIn PDF document text
    • http://wutanumijejol.sportsontheweb.net/71083229083.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445733/normal_601b1d18e63db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447649/normal_601e78eecf9d4.pdfIn PDF document text
    • https://tolajugim.weebly.com/uploads/1/3/4/6/134647220/melupipep_gijomotabedifu_pefuxus_fegideto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402014/normal_6022bfdf59743.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392210/normal_5ff2e176c2106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463803/normal_603f1a96e7f17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414153/normal_60254993638a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491705/normal_602207cf6d71a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://wepuwuzuvam.epizy.com/character_description_words.pdfIn PDF document text
    • http://pupitudaxomibi.epizy.com/business_english_conversation_for_beginners.pdfIn PDF document text
    • http://besikinugid.epizy.com/manual_functional_testing_interview_questions.pdfIn PDF document text
    • http://tinasixubu.epizy.com/gexukeralikuvubovibifu.pdfIn PDF document text
    • http://xotilumezimak.rf.gd/urban_spatial_analysis.pdfIn PDF document text
    • http://kofuwan.epizy.com/norse_and_greek_mythology_gods.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D1 5604 bytes
SHA-256: ad9c4c9e938768738c0cb644d3c98a87fca7c2ab8bc1048d62f6daa793782456
font_01_sfnt_off000106e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E7 10604 bytes
SHA-256: c116a736fe876af5b954354acccdd97e1ce8518eca2fb0f7082b96a748ac81df
font_02_sfnt_off00012b08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B08 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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