Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbd71b9ccc25b92e…

MALICIOUS

PDF

41.7 KB Created: 2020-09-29 09:49:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20398d5dc98879abb2eef4fa0860117a SHA-1: cd19b385186043dc64adb8657cb9c9a035bf2a27 SHA-256: dbd71b9ccc25b92ed31c2e4d82c751c18274638456fb8f23667a50b20201853e
124 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'https://gettraff.ru/mozel?keyword=co2+laser+construction+and+working+pdf'. This heuristic firing, combined with the ML classifier's high confidence, indicates the document is designed to lure users to a malicious site. No scripts were extracted from this sample, but the presence of multiple obfuscated URLs suggests a delivery mechanism for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://gettraff.ru/mozel?keyword=co2+laser+construction+and+working+pdf In PDF document text
    • https://site-1037086.mozfiles.com/files/1037086/zexomurovizelaz.pdfIn PDF document text
    • https://site-1036719.mozfiles.com/files/1036719/38183694686.pdfIn PDF document text
    • https://site-1037245.mozfiles.com/files/1037245/25774086370.pdfIn PDF document text
    • https://site-1037082.mozfiles.com/files/1037082/77311070601.pdfIn PDF document text
    • https://site-1037003.mozfiles.com/files/1037003/nasimideniwuki.pdfIn PDF document text
    • https://site-1036898.mozfiles.com/files/1036898/kapadi.pdfIn PDF document text
    • https://site-1037282.mozfiles.com/files/1037282/31187115833.pdfIn PDF document text
    • https://site-1036848.mozfiles.com/files/1036848/runer.pdfIn PDF document text
    • https://site-1037122.mozfiles.com/files/1037122/67589984682.pdfIn PDF document text
    • http://waxefuxu.les2lacs.com/uploads/1/3/0/7/130775626/fc648be.pdfIn PDF document text
    • http://files.jvssartist.com/uploads/1/3/1/4/131406785/0c4e86e9abeed3.pdfIn PDF document text
    • http://files.erwinleyros.com/uploads/1/3/0/9/130969254/4ef8fabacf4.pdfIn PDF document text
    • http://mazeru.datamakers.com/uploads/1/3/0/8/130814448/b9380f36.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/1/0431/4077/6090/files/doodle_god_alchemy_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6607/1957/files/sifugovupebowenikuxafit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9856/1948/files/harshvardhan_king.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4194/5760/files/85944594647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3621/1357/files/autonics_photo_sensor.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 5

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_off000064ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CE 5516 bytes
SHA-256: adc00df1524d2168ce5ae58a561bd28541ca6d0071f998d2e30a92c4a1d5ad91
font_01_sfnt_off000077b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B5 10020 bytes
SHA-256: d931ad0e811c3256c9b6deda7ab02eda32c974b347c19fee920fc8ae21005258

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