Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a0f0ee1fdd6f9a9…

MALICIOUS

PDF

72.8 KB Created: 2021-01-19 18:51:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 810006e6f3f8fed9b412a74be7ce7a4d SHA-1: 143d05dcaf5117093cfe57fd1a3c1e0bf8ed1b10 SHA-256: 0a0f0ee1fdd6f9a96d6a378370cfc8bd67d6ca164a7e7c07d319a4f3ceb1968d
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/123?utm_term=five+nights+at+freddy%2527s+4+for+mac PDF link annotation
    • http://folivapizi.66ghz.com/culinary_terms.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxovugefulo/Libgjnt/rubukofogu.pdfIn PDF document text
    • http://ruzopiter.iblogger.org/netbeans_8._2_installer.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/heiegds/nejabane.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/zosevid/kalokufuvifo.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/bmw_225xe_iperformance_wikipedia.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/33458219715.pdfIn PDF document text
    • http://noxikemudenuma.epizy.com/colloquial_dictionary.pdfIn PDF document text
    • http://wuwomuwudawim.epizy.com/resume_templates_google_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/happy_birthday_full_song_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/bunobu/vemupawububerarisole.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/zaxerarirunip.pdfIn PDF document text
    • http://rubuvajaroxe.epizy.com/mogunosiwafabinumipijigo.pdfIn PDF document text
    • http://fotafufoka.epizy.com/iso_45001_audit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/english_short_stories_advanced_level.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_off0000dc73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC73 5640 bytes
SHA-256: baa211f376b53d968c76d30c1675434388552fbaa39ab914fc428f18e40baf2d
font_01_sfnt_off0000efa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA0 10904 bytes
SHA-256: ba90057af48498794f29aede49575f83c5929fdef6200e22ce406574d0e4d7e4