Malicious PDF — malware analysis report

Static analysis result for SHA-256 e73b522b11e4fc54…

MALICIOUS

PDF

48.0 KB Created: 2020-07-10 05:18:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50705dc34fad2b2ad6967cbed3957429 SHA-1: a321417040af42ff4212a24470aeb86ccd838b9b SHA-256: e73b522b11e4fc546eb9515894e86e7c3a583f6818caec178e52d3bf1dd39a0b
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary URL identified, https://ttraff.ru/wb?keyword=karnataka%20b.ed%20cet%20question%20papers%20pdf, is flagged as a malicious redirector. The document body, while containing garbled text, also includes this URL and other links to PDF files hosted on various domains, suggesting a social engineering lure to disguise the malicious redirection. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ttraff.ru/wb?keyword=karnataka%20b.ed%20cet%20question%20papers%20pdf In PDF document text
    • http://files.causewaysecuritysolutions.com/uploads/1/3/1/3/131384492/0c3339e4b7dc.pdfIn PDF document text
    • http://files.ducksnestdecoys.com/uploads/1/3/0/7/130775025/jiviwivapebe.pdfIn PDF document text
    • http://files.glaciercitygardener.com/uploads/1/3/2/6/132695343/34ad3b.pdfIn PDF document text
    • http://files.sebgarry.com/uploads/1/3/1/6/131606173/tuvujefotofegu-wigelipopopiru-newavutofibipag.pdfIn PDF document text
    • http://files.northernnerd.com/uploads/1/3/1/3/131379680/wobifopedufinu_beruwedorelixif_kugepa_gakofus.pdfIn PDF document text
    • http://files.strayashop.com/uploads/1/3/1/3/131379262/1733797.pdfIn PDF document text
    • http://files.opunakesurflifesaving.com/uploads/1/3/0/8/130814513/gezitowejukejekojuko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bobonuw.files.wordpress.com/2020/06/29983857904.pdfIn PDF document text
    • https://divezifek.files.wordpress.com/2020/06/32185965760.pdfIn PDF document text
    • https://xojezetegako.files.wordpress.com/2020/06/gonokuzo.pdfIn PDF document text
    • https://puvabuv.files.wordpress.com/2020/07/37259585868.pdfIn PDF document text
    • https://fabewazuzej.files.wordpress.com/2020/06/lewokugupenopedes.pdfIn PDF document text
    • https://samebixera.files.wordpress.com/2020/07/11313907818.pdfIn PDF document text
    • https://vafetojo.files.wordpress.com/2020/06/82465853742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rojifibopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37872338034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kexuxedixu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAC 5332 bytes
SHA-256: 89d48d46ca07600d503fa441d4294e0770b8c6f14defa97251493dc5865c6b22
font_01_sfnt_off00008ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED3 10608 bytes
SHA-256: f1f89a7cd48bd64bd142e7acd61c8d2e4951d76cd0f94ff24cb3f4bcee82f9ae

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