Malicious PDF — malware analysis report

Static analysis result for SHA-256 b958ce83bb407a60…

MALICIOUS

PDF

76.8 KB Created: 2021-03-05 10:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: b3df821890292eae7af8e3534a20b959 SHA-1: c4026933bcca37101b79ea88765f3baaf83052d6 SHA-256: b958ce83bb407a602ea449d10e9de46bdf4257bde45154ac6895a75869042b92
166 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous links to disposable domains, suggesting an attempt to obscure the true destination or host a variety of malicious payloads. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=google+meet+link+generator PDF link annotation
    • https://cdn.sqhk.co/sadebupunen/IlDjhja/superhero_car_racing_apkpure_download.pdfIn PDF document text
    • http://montana-media.com/wagagovegiromabokez7bpmp.pdfIn PDF document text
    • http://mixutadumekaje.mypressonline.com/machine_shop_math.pdfIn PDF document text
    • http://shoppermarket.online/40761503853zlo1d.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/refoxujipe.pdfIn PDF document text
    • http://forsage.pw/appendicite_aigue_emcglwy8.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/lowrance_elite-7_ti2_met_active_imaging_3-in-1_transducer.pdfIn PDF document text
    • https://cdn.sqhk.co/wemojezuvegi/hbHhaid/coffin_nails_designs_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/b8YjiMm/38344056152.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/Ujejehb/95705795559.pdfIn PDF document text
    • http://gagogepatajebe.medianewsonline.com/sinakunoxizapujupewuba.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/plihvjj/23491833638.pdfIn PDF document text
    • http://zufonirawanowo.iblogger.org/accounting_equation_worksheet_template.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lojupefiduk.epizy.com/ca_full_information_in_english.pdfIn PDF document text
    • http://zopoxasemegivo.epizy.com/99863520762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/461137d5-1b97-49ce-9a7e-9cad6827308e/2010_chevrolet_camaro_2ss_interior.pdfIn PDF document text
    • http://vujomafo.epizy.com/ipad_mini_price_in_qatar_carrefour.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/cafe_maitland_information_centre.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/metformin_xr_750_mg_side_effects.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/proform_cardio_hiit_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a091072d-adb1-499c-9b0a-d22e69563276/82257920803.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/auto_blur_background_app.pdfIn PDF document text
    • http://zonafikepejese.onlinewebshop.net/what_is_usps_media_mail_rate.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/sivitewiko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57fed938-cbec-4150-9971-9a6f3052942c/principal_data_scientist_salary_nyc.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_off0000ef00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF00 4924 bytes
SHA-256: 62c33ccc1a10be7869119f30e3d12ff3cbcf7b26903ff7d03c799eb5219f10ab
font_01_sfnt_off0000ffad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAD 11216 bytes
SHA-256: 5b714748df214ac8b2332ecd16fd46cbe5350f2c770fabcf1de89aa973d3c833