Malicious PDF — malware analysis report

Static analysis result for SHA-256 183863f94002ccd9…

MALICIOUS

PDF

79.7 KB Created: 2021-02-26 10:39:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4a4ff940548df303708ac2f600e36dd7 SHA-1: da3bd90a0350ae074f3f0a03dfd65d184db07446 SHA-256: 183863f94002ccd90c874a6c4585fa79cdb495ac2bd00f8eacf0d49f17f0fab2
156 Risk Score

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 0.9997

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://midufefew.ru/123?utm_term=world+capitals+map+quiz+jetpunk PDF link annotation
    • http://rasezatoxefu.mygamesonline.org/la_amortajada_resumen_libro.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/sepejadujaki.pdfIn PDF document text
    • https://cdn.sqhk.co/kasavakujosi/9PZhfid/gasijekuranofeboxavak.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/93149483629.pdfIn PDF document text
    • https://cdn.sqhk.co/gatidixon/cTYwihs/clumsy_ninja_hack_ios_download.pdfIn PDF document text
    • https://nofakuxuwuxow.weebly.com/uploads/1/3/4/6/134684799/5687544.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
    • http://tovivefi.rf.gd/kegipudarasedubifegimag.pdfIn PDF document text
    • http://pulutugorivexek.atwebpages.com/pazenewu.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/risini.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/how_to_trade_forex_fundamental_news.pdfIn PDF document text
    • http://lumosaneja.onlinewebshop.net/93270966986.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/44459187478.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/handlebars._js_template_example.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_off0000ea2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2C 5428 bytes
SHA-256: cb4a852db09058318da869e1a910ef666feb40a46bdcc15ad8617e338dc2cca5
font_01_sfnt_off0000fca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA1 12308 bytes
SHA-256: d9b01bd0ef7a6644f33d663de158ab6040b3041217071761d956cfafdf66a661
font_02_sfnt_off0001239f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1239F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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