Malicious PDF — malware analysis report

Static analysis result for SHA-256 96660aedb3897e4e…

MALICIOUS

PDF

67.9 KB Created: 2020-11-30 10:17:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 721bc162fdf81bef916d81dfe14e7943 SHA-1: d2908b7815e14d7ff8de3aa68e00cac498d3fd54 SHA-256: 96660aedb3897e4eccc6fe218d6633487ee96f25af346fb704eb86afdb36cc04
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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.
  • 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://ggtraff.ru/strik?utm_term=michigan+flyer+bus+stop In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413468/normal_5f94fd17237c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379626/normal_5fb376193801e.pdfIn PDF document text
    • https://wejakoguxi.weebly.com/uploads/1/3/4/3/134324676/tamuti.pdfIn PDF document text
    • https://sobeponul.weebly.com/uploads/1/3/4/7/134756425/420742ec8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402745/normal_5fc3e6c500f6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417305/normal_5f9fe792ef06c.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://uploads.strikinglycdn.com/files/b3c798d0-6729-40df-bdce-ba7cd56e3929/baboboforuvelemuminite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a28898d-279c-45f0-a8de-85fc855574b1/busopuwulaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8432ad79-13b6-47bb-8a14-27df46580448/segasaxinujolafeluba.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/15839402265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6122903-7c4e-4a69-98e3-e395eb3c2a7f/34674392200.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdee593f75b1664399f180/1606282892363/83293418756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6caae00c-d22d-4dec-9897-71621db42e7e/36794607061.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afd755ae-5a85-4137-8e2e-7dae4501276a/7_wonders_of_the_world_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f375b94-9e3b-400d-a20f-ae5e33cf03e0/tikofiwozovawuj.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_off0000bd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD71 5408 bytes
SHA-256: ebf301a8f978182d97bebf273509875d41a00adacdc66f10888208ada8577abd
font_01_sfnt_off0000cfd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD7 10880 bytes
SHA-256: df3592b855795e233b7184edae46a49bddb285ba6a39380b501fbd424836912f
font_02_sfnt_off0000f50e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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