Malicious PDF — malware analysis report

Static analysis result for SHA-256 46572175c1c551fd…

MALICIOUS

PDF

79.4 KB Created: 2021-03-16 03:27:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 45974dfd0ef566a031b691d0c0ae6214 SHA-1: 7385fdd3b07b6c12cb0742b4c44527087a9ba03c SHA-256: 46572175c1c551fd3c31d25e08b141fe3c567d29f3b523b78dda42d84c82c127
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains and redirector infrastructure, indicating a phishing or malware distribution attempt. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and ML_NYX_PDF_MALICIOUS strongly suggest malicious intent. While no scripts were explicitly extracted, the nature of the links and the PDF structure suggest it's designed to redirect users to malicious content, likely leveraging a PDF vulnerability or social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/strik?utm_term=what+is+the+secret+law+of+attraction In PDF document text
    • http://jujovobima.getenjoyment.net/ivan_stodola_baova_ena.pdfIn PDF document text
    • http://fc-aromat.ru/itil_v3_processesac0k9.pdfIn PDF document text
    • http://patajafurep.mywebcommunity.org/after_book_anna_todd.pdfIn PDF document text
    • http://lessonsonline.site/safety_1st_digital_thermometer_manualkefxd.pdfIn PDF document text
    • http://bufibinokurun.scienceontheweb.net/98741535838.pdfIn PDF document text
    • http://pro-komp-master.website/92642010675c9c7g.pdfIn PDF document text
    • http://tevfikyuce.xyz/zisijifufexupebebexidewemspa1.pdfIn PDF document text
    • http://matrixbicycles.com/mercury_135_black_max_specsu5lnh.pdfIn PDF document text
    • http://sonabalule.iblogger.org/vedenemamumibuj.pdfIn PDF document text
    • http://autobaff.xyz/curriculo_nacional_2019_secundariavtyg6.pdfIn PDF document text
    • http://tur8osale.site/80207882364yuyyj.pdfIn PDF document text
    • http://copyrightram.net/cute_love_letters_for_boyfriend_on_his_birthdayy2jlg.pdfIn PDF document text
    • http://help-copyrightservice.xyz/vajuwavatufejimi26mb2.pdfIn PDF document text
    • http://pixelbarista.com/linegovuruvonumukimujp096r.pdfIn PDF document text
    • http://nedavupagisezim.mygamesonline.org/povamidowinemotofize.pdfIn PDF document text
    • http://golixudib.mypressonline.com/how_to_change_battery_in_honeywell_doorbell.pdfIn PDF document text
    • http://siankaanmexico.com/49676906804ay6ga.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://pokitudid.epizy.com/fire_risk_assessment_template_for_construction_sites.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/13970959912.pdfIn PDF document text
    • http://renemived.epizy.com/dizifa.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/76245052430.pdfIn PDF document text
    • http://roruvavaderej.epizy.com/bookmark_design_template_editable.pdfIn PDF document text
    • http://jalasofumikom.rf.gd/herboriste_wow_classic_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/how_to_use_obd_diagnostic_tool.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_off0000ea61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA61 4864 bytes
SHA-256: 8235f1b932aedd069b81225371fe7dc12517b40fd21439b57857bbdacb77aa21
font_01_sfnt_off0000faeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEB 11008 bytes
SHA-256: f6a9d3e41eefd294bc37c8bd8b59376e18b990726822883ec4b81bde754ced1a
font_02_sfnt_off00011ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF9 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f