Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2342a55aa7764c3…

MALICIOUS

PDF

37.0 KB Created: 2020-11-09 01:54:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 8199b0ac02de1627430310e4ecbcb3b4 SHA-1: 57849c6c2312f2216eabcaf3272ff870195d6b20 SHA-256: d2342a55aa7764c35d78ae4865f23b082c8635bb56f61bf05cef0e6da13398c5
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://trafftec.ru/aws?keyword=m1117+asv+technical+manual+pmcs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386091/normal_5fa0a1b1b90a9.pdfIn PDF document text
    • https://zekuwatifakaxi.weebly.com/uploads/1/3/2/8/132815855/9043381.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410731/normal_5f9e7a9b0704a.pdfIn PDF document text
    • https://bipasakugerada.weebly.com/uploads/1/3/4/3/134350286/kefuritok_ruwageligupox_jebitunoma_jupusupobi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391303/normal_5fa45f2da54fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384835/normal_5f8d9e7fdb2ec.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/wavunot/fannie_farmer_cookbook.pdfIn PDF document text
    • https://zojemadej.files.wordpress.com/2020/11/73587489466.pdfIn PDF document text
    • https://dadasumuw.files.wordpress.com/2020/11/oxford_advanced_learner_dictionary_10th_edition_free_download.pdfIn PDF document text
    • https://wubazij.files.wordpress.com/2020/11/59804519021.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/gopiv.pdfIn PDF document text
    • https://vupejiw.files.wordpress.com/2020/11/invertebrate_zoology_books_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/werisametixuligalugan.pdfIn PDF document text
    • https://zatejoru847961968.files.wordpress.com/2020/11/72489844693.pdfIn PDF document text
    • https://xumozaguk.files.wordpress.com/2020/11/2455592564.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_off0000450c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x450C 5048 bytes
SHA-256: a68283f8c59eaf435530808e945d84b1ea3f77c55bc14be3252fa63c10cbc919
font_01_sfnt_off0000561a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x561A 10156 bytes
SHA-256: d3d8a940f04a26c43f28c007d36fec514e3a836c16053852ac8280a9bc5c2d7e
font_02_sfnt_off000078f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F0 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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