Malicious PDF — malware analysis report

Static analysis result for SHA-256 341e4f314c86f0ae…

MALICIOUS

PDF

65.8 KB Created: 2020-11-26 04:51:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 85e45e131609d5722357ea77ef9de6c0 SHA-1: bc057525ffcd0e6c1d5117b547a54928dd77f42e SHA-256: 341e4f314c86f0aebddb455861a68896a28c3ee6e4c26aca269eaa22fd055639
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDFs, suggesting a link farm or redirection mechanism. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest it's designed to redirect users to malicious content or download further payloads.

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
  • 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://traffine.ru/strik?utm_term=sports+merit+badge+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415525/normal_5f9cd0eedab50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f8b36aa05975.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413693/normal_5fa502dd511de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415331/normal_5fad9adf9725f.pdfIn PDF document text
    • https://didunebufanef.weebly.com/uploads/1/3/4/6/134680758/xesulude.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407304/normal_5fa640fe17e92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f910f205bea9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393644/normal_5f94022173921.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5fb34eccc1845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454824/normal_5fae058eae393.pdfIn PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/gejasu.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/sifawekujiki/12559784857.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e83c344-02e3-4c7e-9aed-698745d8c2ca/38822571252.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75265f34-7ef2-4fb4-bec9-87812b4753c8/irony_worksheet_grade_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69b7eac0-5326-4446-81df-ec0c6a48220e/amoeba_sisters_pedigree_video.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/geometry_dash_2.1_apk_download.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_off0000bf46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF46 5740 bytes
SHA-256: 8675611bf7c10043b4f95861d9ac556021cdb83047cf16d662661c249deeb313
font_01_sfnt_off0000d2a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A7 11016 bytes
SHA-256: 98879c2b024307d872cae68b386624ec09494012f40f170256cf25641f3760e7

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