Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c58d3eb5fb18a1…

MALICIOUS

PDF

80.3 KB Created: 2021-04-08 19:00:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d48f65da0c5f2910392c9732ce641b02 SHA-1: f6434435fded2d86ed926c76486c938bfb7a1f0f SHA-256: 76c58d3eb5fb18a119dc2ae03ba311a95c31e5619ab9be6b5f8c0e087dd3114f
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, characteristic of a link farm or SEO spam operation. The embedded URLs, such as https://mezovuduw.ru/strik?utm_term=what+size+tires+fit+a+2007+ford+focus, suggest a phishing or malware distribution lure. No scripts were extracted, but the structure and URL patterns strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/strik?utm_term=what+size+tires+fit+a+2007+ford+focus PDF link annotation
    • https://cdn.sqhk.co/defisepeniba/ihhgQDS/39081541091.pdfIn PDF document text
    • http://mowilobo.22web.org/95987658737.pdfIn PDF document text
    • http://zoxodur.sportsontheweb.net/atomistique_smpc_s1.pdfIn PDF document text
    • https://tatunonomufobuf.weebly.com/uploads/1/3/4/3/134355176/ee64e.pdfIn PDF document text
    • https://cdn.sqhk.co/zexupibo/ugiNqfQ/plant_and_animal_cell_coloring_worksheet.pdfIn PDF document text
    • http://relodifalixogo.scienceontheweb.net/anatomy_and_physiology_of_male_and_female_reproductive_system.pdfIn PDF document text
    • https://kidodizaramaba.weebly.com/uploads/1/3/4/0/134096495/xefudubofaninija.pdfIn PDF document text
    • https://cdn.sqhk.co/butuxolevu/iThgsic/fapimisikejapeno.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/50R4kyU/alienware_monitor_240hz_27_inch.pdfIn PDF document text
    • https://cdn.sqhk.co/xejoxoka/elhage9/glow_soccer_ball.pdfIn PDF document text
    • https://subutadenurafo.weebly.com/uploads/1/3/4/5/134581349/551910.pdfIn PDF document text
    • https://pivamaxisogen.weebly.com/uploads/1/3/4/4/134481881/zevew_mogekatugujuwow.pdfIn PDF document text
    • http://xufamorazogubov.sportsontheweb.net/69993153343.pdfIn PDF document text
    • https://rarasuxa.weebly.com/uploads/1/3/1/3/131398432/4312783.pdfIn PDF document text
    • http://xijonofupawulo.mypressonline.com/peponeganimunimoxog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jetokapexel.epizy.com/tirajikipusunekirukaxo.pdfIn PDF document text
    • http://zepurudevivo.rf.gd/45688366450.pdfIn PDF document text
    • http://bevupun.epizy.com/67807940460.pdfIn PDF document text
    • https://9c43cb74-45e3-47de-9527-fda2e8336169.filesusr.com/ugd/af0aa9_7b089231da974a7e96cd2c08ffee1554.pdf?index=trueIn PDF document text
    • https://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_2e4189f0e2ef4800abf374dd06b35491.pdf?index=trueIn PDF document text
    • http://pibonev.rf.gd/man_on_the_street_interview_equipment.pdfIn PDF document text
    • http://taxifegizuni.epizy.com/bedingungsstze_englisch.pdfIn PDF document text
    • http://nofulevar.epizy.com/penny_dreadful_episode_guide_season_1.pdfIn PDF document text
    • http://rabuxevemut.rf.gd/what_is_the_game_pandemic.pdfIn PDF document text
    • https://c5b3e1fc-3b55-407d-a8d9-2bfa6c9015c1.filesusr.com/ugd/6df244_09237d39895848619a05417dc7555787.pdf?index=trueIn PDF document text
    • https://46d16763-6c5f-4e19-aa2c-3f4071fcbec2.filesusr.com/ugd/26f730_339fc08db06a4e8990cd95d0d2ca5b49.pdf?index=trueIn PDF document text
    • https://a3c35cc3-4a3f-4d41-ab51-8b3e4b114d30.filesusr.com/ugd/2b25b5_3fc91543b7c44ac0b438dba36bdad531.pdf?index=trueIn 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_off0000f9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E6 5492 bytes
SHA-256: d27ff8eeb5bf0259a1322bdccb900122d8b50727d6aa6a277b3bb938864a4bc9
font_01_sfnt_off00010cac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CAC 11520 bytes
SHA-256: 1d8f80254cb53a92a143d42eb73d6ebb5f8c3ad0ad17e13366fd812ecf0f50a4

Open this report in the interactive analyzer, or submit your own file for analysis.