Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be12823d7a39f90…

MALICIOUS

PDF

43.5 KB Created: 2020-10-15 03:22:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8956515ca429aec1e4e3b802c8be6b67 SHA-1: fe4069e885f3685ba7c806655cae2013b7c777f8 SHA-256: 9be12823d7a39f90f3e8a84db50940c0b9b052601c997732ade702bbc1c9d3cb
132 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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
  • 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://ttraff.club/pify?keyword=maple+leaf+outline+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f87182dd68a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f877e84c86d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f875e448aa38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f87861740326.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f870221364cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365560/normal_5f87229da06de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367650/normal_5f877349b29eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f8757283b278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367911/normal_5f8789f05fe88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f870414dcd26.pdfIn PDF document text
    • https://site-1038905.mozfiles.com/files/1038905/rajudomitojuvijidomifu.pdfIn PDF document text
    • https://site-1039633.mozfiles.com/files/1039633/ridilapuwazewuzelewulo.pdfIn PDF document text
    • https://site-1043404.mozfiles.com/files/1043404/3064135114.pdfIn PDF document text
    • https://site-1037143.mozfiles.com/files/1037143/26853248713.pdfIn PDF document text
    • https://site-1042492.mozfiles.com/files/1042492/27915404058.pdfIn PDF document text
    • https://site-1040203.mozfiles.com/files/1040203/17622954167.pdfIn PDF document text
    • https://site-1036872.mozfiles.com/files/1036872/67839142747.pdfIn PDF document text
    • https://site-1043396.mozfiles.com/files/1043396/24896921964.pdfIn PDF document text
    • https://site-1040003.mozfiles.com/files/1040003/pulmuone_korean_noodles_microwave_instructions.pdfIn PDF document text
    • https://site-1041785.mozfiles.com/files/1041785/59398011456.pdfIn PDF document text
    • https://site-1040354.mozfiles.com/files/1040354/55656192654.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/788e9a63-e313-46e9-84de-e362bf627a5b/xegufow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d6a0307-b6ce-4745-bdd0-02d5e2ff5841/letevojefimejirurif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80404e49-7898-4734-8d97-2f875079bbe9/gojotinokerakuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c05f23a-044b-4bd5-b7e7-9bf6c306c611/75875621240.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa5e5e5a-cb60-4fc8-8746-a6746ff6c045/68454418124.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_off00006da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA7 4764 bytes
SHA-256: 63ddbebf7b3237a3419dcd4df3135f3c131f3ff06bf0dab3a34982385410c44a
font_01_sfnt_off00007df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF6 10080 bytes
SHA-256: 6ca1f0d0e88d5a0429387c2c87939048456473d4a18be900d74124fa8a5cdad3

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