Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c275285fa542f9…

MALICIOUS

PDF

86.0 KB Created: 2021-06-01 19:01:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 779ef821463f11eef0b528a682e8ee9c SHA-1: ed116022465f047f00bb691435d49388f0e57d05 SHA-256: 46c275285fa542f9ed8399625b3ffda8714edf84fa3c7703b4382356c2401b32
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many of which are hosted on disposable domains and appear to be part of a link farm designed to redirect users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs and the structure suggest an attempt to trick users into visiting malicious sites by disguising them as search results for popular media.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://drafthe.ru/pbw?utm_term=captain+america+the+first+avenger+full+hd+vietsub PDF link annotation
    • https://refiraledekire.weebly.com/uploads/1/3/4/7/134715744/pafawewapofi_ruvoraxes_turunuzoka_kukaribevosoxop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459470/normal_5fe2737b91248.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380228/normal_5fdfca36e9735.pdfIn PDF document text
    • https://tevupuzenoxa.weebly.com/uploads/1/3/6/0/136009769/fifafamope-tijiwupixopaja-migixewi.pdfIn PDF document text
    • https://pefobasor.weebly.com/uploads/1/3/4/1/134131397/ritokataruk.pdfIn PDF document text
    • https://gopogaxewose.weebly.com/uploads/1/3/4/0/134013169/a9420158484e66e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467573/normal_5fcc9f8e8f587.pdfIn PDF document text
    • https://xumexutibivuw.weebly.com/uploads/1/3/2/6/132680998/gizuzo-nidaz-merupawijixi-nolojo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422909/normal_605700afa275e.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/028bd001-6a77-48d6-a8bc-75b6fbce74e8/vevixawinuxifotumonuxak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/165f1afe-bd7e-4862-89ba-c2c4e662767f/67754668710.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63b4babb-a1ed-4f88-bd49-448ec886f33c/what_was_the_main_decision_that_came_from_the_insular_cases.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52f4dbbf-a27a-4a25-a342-11d02745456b/mental_status_examination_sample.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/389a3bf7-d500-4961-b9d4-ac6e8f5dee5d/14491236260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf04ed1a-1947-4f17-bccf-cdb6d930f7ae/kiwaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f878a5b7-4429-4a63-ba80-2484b61ce472/physics_questions_and_answers_grade_9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f2d913d-59aa-49dc-a50d-9e88495320aa/umrechnung_pfund_schweizer_franken.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/587a1d89-1a1f-4c20-bc39-4e857a27ddaf/lotaluterozilupurinovizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62bb14a2-6fc5-4f6c-8faa-014cdfcfc6c7/40972198037.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edfee49d-4481-4fb9-b582-7caeaff96228/blade_chroma_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46120bca-7f20-40d9-be51-d0b6b6294d1a/7610735342.pdfIn PDF document text
    • http://viluxese.pbworks.com/f/contoh_judul_skripsi_akuntansi_pajak.pdfIn PDF document text
    • http://viluxese.pbworks.com/w/file/fetch/144427494/84676309808.pdfIn PDF document text
    • http://sewafebi.pbworks.com/f/20678196878.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB7 4372 bytes
SHA-256: 7b586cc2977a982f124a776131abee8fd82f6d23bee3a400523f42cdcdc7de8f
font_01_sfnt_off0000eb42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB42 5676 bytes
SHA-256: 1e8c4f0ca52c4e92d2b0dfa4429433e670525994b5dafe48fcb0a93023525fd6
font_02_sfnt_off0000fe66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE66 19116 bytes
SHA-256: 35e64f595832f7b8c802393877a3f196de9022f2f06134f145171c9fca147481
font_03_sfnt_off00012f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F76 16936 bytes
SHA-256: 3680b916ad7de4e261f78cc5ce5e9ad738decf061f083bf9cf416183b417769b

Open this report in the interactive analyzer, or submit your own file for analysis.