Malicious PDF — malware analysis report

Static analysis result for SHA-256 017d6323e9a96da3…

MALICIOUS

PDF

67.8 KB Created: 2020-12-01 07:46:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1845205440a1c1137d575697eef6102f SHA-1: d8bafc83cd25a5f3896db0a11e4047d46238e0c0 SHA-256: 017d6323e9a96da33f214050e174e8d9a9447014850e9f0d82fdcc20cd7b461d
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 0.9997

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://traffset.ru/strik?utm_term=citing+lab+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484997/normal_5faf3ea4d539a.pdfIn PDF document text
    • https://kegazesawatodo.weebly.com/uploads/1/3/4/3/134378031/8097210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414680/normal_5fb2964949f08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372707/normal_5fb97d67d19bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414166/normal_5fb5a82615e0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390052/normal_5f9486abc1c85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445736/normal_5fbede21a76e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425926/normal_5fa1fe4219af1.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/nagev/11462084713.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/85409894653.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/95061853408.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/74295087368.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/islamic_finance_development_report_2018.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_off0000ca7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA7F 4776 bytes
SHA-256: 22ac74c18613298fb3848c295d3049185824501fc14c1c8cb32fc6184aabf02f
font_01_sfnt_off0000dab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB0 12740 bytes
SHA-256: b147b7d9760678da21cdfee17b313b8c9345afe1025a19cfb775b23fd9db0616

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