Malicious PDF — malware analysis report

Static analysis result for SHA-256 386ee507eac3b04b…

MALICIOUS

PDF

36.2 KB Created: 2020-11-08 14:00:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 97913b122b890c36a5ac0c7b48e1459f SHA-1: 811e8b67793d177ea40db48771406262ff080d8e SHA-256: 386ee507eac3b04bd71411d472d01275a4c964c40b5205d0be82442abb3dc607
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafficel.ru/aws?keyword=ultimate+mortal+kombat+3+apk PDF link annotation
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/d16d0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382406/normal_5f92ce06c4bd2.pdfIn PDF document text
    • https://likuxosudiva.weebly.com/uploads/1/3/4/6/134603152/bomuvuzoweru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/muwokaz.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/600_essential_words_for_the_ielts.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/31723141427.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/lokemenose.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/fegelap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6676357-db99-4fd7-bf3f-80ce663cb4a9/sibufovugobuju.pdfIn PDF document text
    • https://s3.amazonaws.com/vezosoluvezoj/29067933755.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4187 4828 bytes
SHA-256: 371866b0870af3194b11bffba8d50b8288dd3c26403f71e7505b832ab533c3d6
font_01_sfnt_off000051ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51EA 10248 bytes
SHA-256: c5990f23b67ebb7ec1ecc2c1412ea21aaac76ada2993621a78c6e7d061fbcd09
font_02_sfnt_off00007503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7503 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34