Malicious PDF — malware analysis report

Static analysis result for SHA-256 236acbf09c28c44d…

MALICIOUS

PDF

75.7 KB Created: 2021-02-18 21:15:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0b10d4a165d6b285dfd7b1e56a467f3f SHA-1: eeeb27a0c6771d5abd5cec3a4bbdcebb54cae81c SHA-256: 236acbf09c28c44d34d880b599110f08a5b96358b9a51af580664bed584c4809
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/aws?utm_term=how+much+does+a+medical+lab+tech+make+an+hour PDF link annotation
    • https://cdn.sqhk.co/xajegakagiz/6hcnmA5/motakenizipikapisabilifa.pdfIn PDF document text
    • http://ejqy.com/wuzaritebevalonudfrgah.pdfIn PDF document text
    • http://kobujiva.iblogger.org/ambari_kannada_movie_naa_songs.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/36439908181n6s6n.pdfIn PDF document text
    • http://idealslimitalia-ufficiale.site/acr_guidelines_rheumatoid_arthritis_2020aenv0.pdfIn PDF document text
    • http://unlockdeals.shop/99922290263rv2e4.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/4ichege/dixiwena.pdfIn PDF document text
    • https://cdn.sqhk.co/gasariba/geU5Uhd/evolution_2_battle_for_utopia_hack_mod_apk.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/wisuw/aviva_pension_scheme_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/78213028252.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/dukopifewamitimuramog.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/kenuxomujibewanodaguf.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/18053253765.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/win_tv_guide_albury_wodonga.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/staff_capacity_building.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/togisegewapitupox.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/56134486290.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/avg_antivirus_cleaner_apk.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_off0000eb2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2D 5436 bytes
SHA-256: f8f818108c6137a7a1dea95152cac7c123520dde15cd43eb42570ca7de5a91ac
font_01_sfnt_off0000fd8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8B 10624 bytes
SHA-256: ffed29d9268edaae8f2a49c4cd1b9f719e61a377d4d87ba7d3a6b06ee43936d5