Malicious PDF — malware analysis report

Static analysis result for SHA-256 272f0c924794d75e…

MALICIOUS

PDF

61.7 KB Created: 2021-02-18 03:13:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4029c1fa9d6a7f9f02eb6efbb7c91a83 SHA-1: 2855644aa1da6ca74a62ffe0d23f34541dfecc2a SHA-256: 272f0c924794d75ecd50f700e9d7248ec3b0269e93809468b5dd54899e35f3e6
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wix?keyword=conejitos+enanos+bebes PDF link annotation
    • https://jumosoguwakebak.weebly.com/uploads/1/3/4/5/134588816/kumobumip-kesupubeja.pdfIn PDF document text
    • http://fragcups.com/alcatel_a30_plus_manualjvqrv.pdfIn PDF document text
    • http://berkeciftci.net/pumagadu0wson.pdfIn PDF document text
    • https://fexiragija.weebly.com/uploads/1/3/1/4/131409693/jiwot.pdfIn PDF document text
    • https://zikepasut.weebly.com/uploads/1/3/4/1/134108801/98bc0ad473bd7b2.pdfIn PDF document text
    • https://fuvedomuwipiw.weebly.com/uploads/1/3/1/6/131636935/nesonukewasabafazave.pdfIn PDF document text
    • http://kernig.store/biwejurivekufunwdejt.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/a40377e48.pdfIn PDF document text
    • https://rejonogatu.weebly.com/uploads/1/3/5/3/135392998/d669f689d7bf.pdfIn PDF document text
    • https://pufinixebajev.weebly.com/uploads/1/3/0/8/130873949/ratuxu.pdfIn PDF document text
    • https://rebijigubewu.weebly.com/uploads/1/3/4/7/134770847/d022f144.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/zerepuzuze/bhajanavali_comedy_video.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/43618661907.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/backup_android_image_to_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/kibanaledejofab.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/caesar_3_mac_os_x.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_off0000b5e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5E1 4672 bytes
SHA-256: ec0e644393b675c9409141577c2eb253a89f95d1bf66bbce3abc823f11963336
font_01_sfnt_off0000c5d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D7 11108 bytes
SHA-256: 6209daeae73bba7330a09370f8802dc2279b63267dbd6b1d9e6b630f214b107b