Malicious PDF — malware analysis report

Static analysis result for SHA-256 079e61c3e207c118…

MALICIOUS

PDF

75.6 KB Created: 2021-03-27 19:12:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 3835de4be1dff80ea8f23281977dbcd4 SHA-1: 7f7517e15fca7a8bd7881be19fb072a18f757557 SHA-256: 079e61c3e207c1180a76d16be47efc08e6eda7a61d0c9e1f3cf362f10b41e9a1
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm with numerous external URLs, suggesting a phishing or SEO manipulation attempt. While no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/award?keyword=coliforms+in+water+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374380/normal_604cd0c14259e.pdfIn PDF document text
    • https://bomuwokobija.weebly.com/uploads/1/3/4/0/134041081/kaxusebutadapomivani.pdfIn PDF document text
    • https://detifurotuso.weebly.com/uploads/1/3/5/3/135321595/ec8c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411252/normal_60071066c99b1.pdfIn PDF document text
    • https://tajagarajoj.weebly.com/uploads/1/3/0/7/130776182/d96449b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467560/normal_5ff360cf71133.pdfIn PDF document text
    • https://bufaxivija.weebly.com/uploads/1/3/1/3/131383981/rakezusadex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407747/normal_601ff20e8314d.pdfIn PDF document text
    • https://sobopagep.weebly.com/uploads/1/3/0/8/130873740/c2d885f260.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/povodijirig/xilexujeranar.pdfIn PDF document text
    • https://e05653fc-386e-4c8b-889d-738aee72c63e.filesusr.com/ugd/62421a_32726d7644fd4d128f28aeda44a85e1f.pdf?index=trueIn PDF document text
    • http://funolowudako.epizy.com/85351534522.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/difference_between_badger_5_and_badger_500_garbage_disposal.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/jinijebezejitewakijagedu.pdfIn PDF document text
    • https://f8e303d0-f350-43d2-b7c3-f886ef13ec25.filesusr.com/ugd/1bb397_29f2165e9ec34d8d830773316e412f79.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/54c36e8b-c676-42d3-a19a-c243e5005280/noxewodo.pdfIn PDF document text
    • http://nividibewejoba.rf.gd/29391646120.pdfIn PDF document text
    • https://a7176590-a44a-43b4-8b25-1171fb6190ac.filesusr.com/ugd/e6ccb8_df6bdcc226af490c9f3a46bb43122417.pdf?index=trueIn PDF document text
    • https://755d026c-fd58-4633-9ca9-8af24261f473.filesusr.com/ugd/4622eb_51290ddab73543218f3e3c2072140dd6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e318973d-9ab2-4b9b-8bd6-04d044b4abb1/clasificacion_de_derecho_objetivo_y_subjetivo.pdfIn PDF document text
    • http://sowarom.rf.gd/pugiwesamizu.pdfIn PDF document text
    • https://53860ffb-5975-4088-b838-5c82367c2827.filesusr.com/ugd/0d2908_4dd8e2097fb243df99959ef52a932eed.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3191ac1-f711-4b1a-99d1-c4c416c7771e/34120044955.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/zobuseka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e884d032-a9ef-416e-9e9d-642324677962/luwoxufilesofaxibokog.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_off0000ec19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC19 5184 bytes
SHA-256: e0cadcf8c30a0c160df062c5a99e63e13f06884e52262ecd47121a4e8ca06b54
font_01_sfnt_off0000fdb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB3 10392 bytes
SHA-256: 4a36a1cb475ab94cc2434d31bc9c0c9114b0f1620fddc09c3a726bb69f4bcbf9

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