Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ff601100b2dfd0…

MALICIOUS

PDF

115.5 KB Created: 2021-04-12 08:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 2c3da99a759c1ac247690f31daccd795 SHA-1: 9334dc0c3d24a218afde4d87ac0b20d465b46c26 SHA-256: 14ff601100b2dfd0e0c6eea83af91c1e6ea07068459378d5de69a4c2e112d576
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It functions as a link farm, directing users to numerous disposable domains, with a primary lure related to 'Syd field screenplay structure'. The embedded URLs and the PDF's structure suggest it is designed to redirect users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/strik?utm_term=syd+field+screenplay+structure+pdf PDF link annotation
    • https://lewebivaduxug.weebly.com/uploads/1/3/5/3/135392118/xoxudalemofujusoke.pdfIn PDF document text
    • https://diwifiburu.weebly.com/uploads/1/3/4/8/134871147/kowanifudomadaz.pdfIn PDF document text
    • http://lupexovagin.iblogger.org/8830315110.pdfIn PDF document text
    • https://cdn.sqhk.co/mojekuvugise/b4Ovief/mopigupagidazez.pdfIn PDF document text
    • http://mofetopevufije.iblogger.org/rajavabutad.pdfIn PDF document text
    • http://ourfanz.com/37840647233juwid.pdfIn PDF document text
    • http://topstudy.fun/business_administration_degree_jobs_listv87t2.pdfIn PDF document text
    • https://cdn.sqhk.co/zijigemeworu/gj9jeUb/lujafaj.pdfIn PDF document text
    • http://vijevejumozugim.sportsontheweb.net/what_religion_is_judaism_based_on.pdfIn PDF document text
    • http://mewudaguzexo.sportsontheweb.net/xobapebariwu.pdfIn PDF document text
    • https://lemusovigezamo.weebly.com/uploads/1/3/1/3/131381045/4939962.pdfIn PDF document text
    • http://mazanatur.space/ausfhrlicher_lebenslauf_musternc1w6.pdfIn PDF document text
    • https://cdn.sqhk.co/xokebuzizo/q5geQ1n/36477107298.pdfIn PDF document text
    • http://axecheat7.xyz/niwegetlc422.pdfIn PDF document text
    • https://cdn.sqhk.co/vutowogipu/Cm4agh6/88386069559.pdfIn PDF document text
    • https://cdn.sqhk.co/fofesali/jggdHie/tuning_fork_medical_use.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/dutuzanob/sandisk_clip_sport_plus_16gb_review.pdfIn PDF document text
    • http://lidesesepaz.rf.gd/mudenotivemok.pdfIn PDF document text
    • http://tadidemoribezor.epizy.com/94362089476.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/puzasekodap.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/sigawavarixavezukenaxo.pdfIn PDF document text
    • http://paxerakomis.onlinewebshop.net/nusilojuzuxeb.pdfIn PDF document text
    • http://sewejatoxomo.rf.gd/tuzuzuvolegijogu.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_off000185e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x185E3 5352 bytes
SHA-256: c069c7d6e0e2b89716a4e82949a189eec6ca6e0be5c2e6807a96df856683fc0e
font_01_sfnt_off00019834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19834 11172 bytes
SHA-256: 5c7159d4218d1486d2a0dabf3954d94d06ea021de6b5f61aaf0ae2fcc657df4e

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