Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c74ad0e4620f0da…

MALICIOUS

PDF

41.9 KB Created: 2020-08-23 06:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 457f9302e53b23ddfcdc820b225e937b SHA-1: 4fef29ff966279d8b2143dbeb245b20211412c58 SHA-256: 1c74ad0e4620f0daad06a4d5062badbd5fd4471d690328658c7e03f2a7802b7f
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service known to host malicious content. The document body text explicitly mentions 'Latest version of telegram free' and includes a URL that leads to a redirector. This suggests a social engineering tactic to trick users into downloading potentially malicious software or visiting compromised sites. The PDF also contains numerous links to Shopify-hosted PDFs, likely part of an SEO link farm to improve search engine ranking for malicious content.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/pify?keyword=latest+version+of+telegram+free In PDF document text
    • http://butirite.shopgoldgray.com/uploads/1/3/1/6/131606289/govitoli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0261/7252/files/char_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7583/5806/files/yamaha_moto_4_250_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4717/4822/files/cambridge_igcse_chemistry_coursebook_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/advantages_of_case_study_research_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7862/3138/files/secretarial_abilities_books_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3319/7718/files/21661685443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/isometric_piping_drawing_in_autocad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/placenta_previa_gpc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9364/6753/files/41953597679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0844/2020/files/gadutopomokuwelimitezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0538/6647/files/berdirinya_dinasti_abbasiyah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/71739673565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87745409623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1966/4542/files/abstract_algebra_questions_and_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

Related samples 1

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_off000066f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F4 5088 bytes
SHA-256: b11d8f68c945eec4e1cea8af71f0a36f3f50579ae6bc16745fabcfca66d5fbf3
font_01_sfnt_off0000783b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x783B 10140 bytes
SHA-256: 84b7c2c0d982e700204ada60751368e37ebcf541b5f15d3c6b3f55217109023f

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