Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e50d3eb92dd2ef…

MALICIOUS

PDF

75.0 KB Created: 2021-03-05 09:46:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f79f73680c2cfc8ff79ff19885a1e33e SHA-1: 8f64bf312279807c180de1ad491460f88af97a14 SHA-256: e1e50d3eb92dd2ef1856c48b46371611dc03a1dc9702fb76826638f082b5164a
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious content. It contains numerous embedded URLs pointing to disposable domains, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farm characteristics further supports this, indicating an attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://xezojetit.ru/123?utm_term=how+to+connect+jabra+cruiser+bluetooth PDF link annotation
    • http://xigesoti.iblogger.org/what_to_read_after_percy_jackson_series.pdfIn PDF document text
    • http://ashotik.space/rusenejenotedovoxikuh6u7.pdfIn PDF document text
    • http://reactivaperu-2020.com/vusarargdw3d.pdfIn PDF document text
    • http://ontrade.top/49611748431iyo0e.pdfIn PDF document text
    • http://creditactive.info/89237636444kf8c1.pdfIn PDF document text
    • http://klokisik.space/mejasoweremolivukanabutkj1zz.pdfIn PDF document text
    • http://barbanapoli.moscow/investor_s_business_daily_technometrica_poll2vnvx.pdfIn PDF document text
    • https://cdn.sqhk.co/manizamo/fjcduha/spellbinders_grand_calibur_replacement_plates.pdfIn PDF document text
    • http://help-feedback-amzn3.xyz/maltose_anomeric_formsf0xwb.pdfIn PDF document text
    • https://cdn.sqhk.co/moserusoba/ieejfwR/67046427462.pdfIn PDF document text
    • http://blaugrana.ru/66351139785g5f31.pdfIn PDF document text
    • http://vudujupuboneg.22web.org/bcbs_north_carolina_appeal_form.pdfIn PDF document text
    • http://1fps.ru/kogusidegumasabumagef2sfm.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/jixav194qq.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/BJhigc5/memoji_hijab_islamic_muslim_stickers_for_whatsapp.pdfIn PDF document text
    • http://chambrehq.xyz/zozeremizerojamozabys5hh.pdfIn PDF document text
    • http://apeech.ru/tavikojorototavdzrw.pdfIn PDF document text
    • http://geleostone.online/93485558092pvcwu.pdfIn PDF document text
    • http://hopecommunitynaz.com/eliciting_sounds_wayne_secordv8j79.pdfIn PDF document text
    • http://gikepefizera.22web.org/remittance_advice_template_myob.pdfIn PDF document text
    • http://afracheat1.xyz/suwopakezemoxidoju6bumc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tasopawak.rf.gd/powerpoint_theme_free_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/dokofupapozijelu.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/68880485360.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/vusumagoxopijifu.pdfIn PDF document text
    • http://gakelapirafit.epizy.com/amoled_wallpaper_android.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_off0000e932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE932 5156 bytes
SHA-256: f9229651f772e2a23062a53a657d4c10a567da4b68cda1737601778a6f197d8b
font_01_sfnt_off0000fac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC0 10468 bytes
SHA-256: cdb5a1cf412b5f0644b96c2da7a6055adb80d8bb1dffa207f9220bfa092cafa8

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