Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f158c724de60002…

MALICIOUS

PDF

78.2 KB Created: 2021-02-19 13:58:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5a27eb08758c13549dbebe3e12560a82 SHA-1: 269ad9a077f32c40e4c3892110ee9ad423d9e1ad SHA-256: 4f158c724de60002fa2b10a07e8d90f0f2cfa65c9a1a29b206a6fbf577e36412
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/123?utm_term=what+is+the+punctuated+equilibrium+model PDF link annotation
    • https://cdn.sqhk.co/pixazizaze/higiiiu/25159568973.pdfIn PDF document text
    • https://cdn.sqhk.co/mebereserab/jajjjjj/gravitrax_xxl_starter_set_marble_run.pdfIn PDF document text
    • http://mekapetakosa.22web.org/android_phone_10000_to_15000.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://loxazugexola.epizy.com/dabeverogonogolamepap.pdfIn PDF document text
    • http://resisimokopi.epizy.com/xonosagab.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/99576172463.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/zinda_bharat_song_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/99747863999.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/bafg_folgeantrag_berlin_welche_formbltter.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/corredores_ecolgicos.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/rimurixabe.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/online_video_converter_v3._0_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/79391480170.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/wopinurugepomuvafaxovi.pdfIn PDF document text
    • http://tipujujidudig.rf.gd/zoxosab.pdfIn PDF document text
    • http://sugizujesel.epizy.com/sodebebo.pdfIn PDF document text
    • http://katevafitaga.epizy.com/cymera_for_pc.pdfIn PDF document text
    • http://kazigolukujo.epizy.com/bum_diddy_bum_bum_song.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_off0000f542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF542 5592 bytes
SHA-256: 9ebcf392d75bcf9c7a851c0af4db41f5eef2cad73ae8783ca2fd9dce7457b12f
font_01_sfnt_off0001081e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1081E 10724 bytes
SHA-256: cc979cd99697b2646a45ea22a9c6cd00006301b6be21dcce90511cd6c2fbc8fb