Malicious PDF — malware analysis report

Static analysis result for SHA-256 3226c24d5874505f…

MALICIOUS

PDF

60.5 KB Created: 2020-11-24 17:59:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5856e0247357aa5ce47cbaad477ca867 SHA-1: d6e154ccbe0060bd1ded208843812e06ca32a3db SHA-256: 3226c24d5874505f50c256f4b5642516ca230db55a962842f11fa1eccec8a760
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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/123?utm_term=life+recovery+workbook+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471704/normal_5faa1c036a8ee.pdfIn PDF document text
    • https://fexifeter.weebly.com/uploads/1/3/4/6/134612515/914c5bae13ca0.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/toliwudalamem/art_contests_2020_for_14_year_olds.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/danone_sa_sustainability_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/50221974481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32e2ae01-9942-4faf-acf8-71ea4a705455/gray27s_anatomy_40th_edition_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/10005921425.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/8327936748.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/86892992504.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/believe_in_yourself_wallpaper_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/bisutixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/496a8297-5f55-4321-b21e-ceb1aafb6c0b/mod_ssl_so_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91d424ea-eb03-48cf-adfc-f155c0947298/fukoxasatapub.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/pre-algebra_with_pizzazz_page_97_answers.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_off0000af88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF88 5128 bytes
SHA-256: e1dcb704409baef2e6199d002722aad3938f8b1fcc5b40f414dce25b4e12f673
font_01_sfnt_off0000c12f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC12F 10924 bytes
SHA-256: bc3c44436b6bbbf509c6704e099c2566f9366699d6dd9eb9050de14d4e786a20

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