Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7db2aae9266491…

MALICIOUS

PDF

76.4 KB Created: 2021-02-22 20:16:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ef7d3bae590a0f6a9bd13d33bd175b0d SHA-1: 7ff56a37ace3f2dd7e4ab1b710fc758cc2fe6efc SHA-256: 9f7db2aae92664913d2c2fead729342650c9a2142f4c0a81cf63a6f3a8d046d5
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://leonvi.ru/aws?utm_term=how+to+fix+a+fridge+that+won%2527t+get+cold PDF link annotation
    • http://zozuwax.66ghz.com/gufisaladivejefafu.pdfIn PDF document text
    • http://vukosam.22web.org/94170833780.pdfIn PDF document text
    • http://noxodexuvalolum.iblogger.org/nizarize.pdfIn PDF document text
    • http://xurixekan.22web.org/activity_log_template_google_sheets.pdfIn PDF document text
    • http://zuwujamoruwipam.22web.org/45741541637.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/jevelel/mokapemeboferazasufupidil.pdfIn PDF document text
    • http://tiwogiponifi.rf.gd/ibm_java_6_aix.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/sakabajidezug.pdfIn PDF document text
    • http://zukavinu.rf.gd/46559550492.pdfIn PDF document text
    • http://kimisudo.rf.gd/treatment_plan_for_bipolar_disorder.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/rafebagasubudisosefig.pdfIn PDF document text
    • http://wulagaw.rf.gd/98808788296.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/live_caption_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/peer_gynt_suite_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/fundamentals_of_petroleum_economics.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_off0000ee93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE93 5260 bytes
SHA-256: a1c3de62d5818dbc5a407b6b7974622172596dc46a7239213f87d8cab5486679
font_01_sfnt_off00010090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10090 10592 bytes
SHA-256: 2df579f072b2a0f2982cc8c9ba8a28ce46dd6a1dc668b12e74811b807f6f6739