Malicious PDF — malware analysis report

Static analysis result for SHA-256 0317292556855299…

MALICIOUS

PDF

77.3 KB Created: 2021-02-26 12:57:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d072d67b712a1d132a514fe847590a9b SHA-1: c0b24e3dbaa777a2450f47c4fdeb1c9bdfad39de SHA-256: 0317292556855299c2dffec4de1105d92a4390cdc21eab07ff5263ed0bd4145a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by heuristics as a link farm designed for malicious purposes. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/aws?utm_term=project+management+institute+agile+certified+practitioner+%2528pmi-acp%2529+certification+exam PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380869/normal_5fcee1c694ce8.pdfIn PDF document text
    • https://mixenabunagoxo.weebly.com/uploads/1/3/5/3/135320093/valive_fekowev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446511/normal_6013bba6d35bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393183/normal_6035503ed1241.pdfIn PDF document text
    • http://fijeveg.iblogger.org/xotorebil.pdfIn PDF document text
    • https://maraduwiz.weebly.com/uploads/1/3/4/3/134363873/7035114.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447079/normal_601bcafda41c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452398/normal_5fc815301fcd7.pdfIn PDF document text
    • https://biweworu.weebly.com/uploads/1/3/4/5/134525234/e2330e6c3f2.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/kefefetafij/salutiniwomitiwesijap.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/tupowolavik.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/36706920214.pdfIn PDF document text
    • http://marabawem.rf.gd/biripat.pdfIn PDF document text
    • http://nezenomawaza.epizy.com/everfi_stem_career_exploration_answers_quizlet.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_off0000ec8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8E 5804 bytes
SHA-256: 5c48e52f55eb5c6b4e40fbee206c9c83da889078f96cf1df3e2ca8c8175d2a47
font_01_sfnt_off00010051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10051 11260 bytes
SHA-256: bfc7063ae6641f109eff3894048edab68a65ed96cdefaaad4fcc62170de19d29

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