Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a93bf83386ede2d…

MALICIOUS

PDF

68.2 KB Created: 2021-02-14 19:58:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 733085ff1a2c9fe3467d1fc1f307941c SHA-1: e27dec724c025c5943a20246b13bc1a8b0f540ad SHA-256: 5a93bf83386ede2da5e3d79e20930b088ec59ae60ba67db1957ba1f36f917ad8
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/123?utm_term=how+are+apples+oranges+and+watermelons+alike PDF link annotation
    • https://cdn.sqhk.co/bilejufikone/0sCgHmk/speed_racing_ultimate_3_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/womibakok/2P7iblQ/93894655621.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/jezekemunidup/sidepefafugirinuwenibu.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/62272867747.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/84671836663.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/24187192609.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/17308121110.pdfIn PDF document text
    • http://bidemuv.rf.gd/gta_3_aptoide_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/growth_mindset_worksheets_4th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/glioma_glioblastoma_multiforme.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/circulatory_system_worksheets_for_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/bagokiko/vijayawada_kanaka_durgamma_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/nice_guidelines_bleeding_esophageal_varices.pdfIn PDF document text
    • http://sezusol.epizy.com/tratamiento_para_angina_de_pecho.pdfIn PDF document text
    • http://zodejewab.epizy.com/jigas.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_off0000cce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE7 5396 bytes
SHA-256: 62e564a12874e759fb340e890a77d079271ce896133c4dde22e201d99cdc0a60
font_01_sfnt_off0000df3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3A 10772 bytes
SHA-256: c0af19866af5e4aff399a2f8457bc11ff39e7f97c278d2e2bab597a2b87a83c5