Malicious PDF — malware analysis report

Static analysis result for SHA-256 00bb02e52624e224…

MALICIOUS

PDF

71.2 KB Created: 2020-12-16 22:12:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 820f9a4e5b39faae7a629415e422be84 SHA-1: 8a577a2a876225ef841af5b06f350d45ceb44ce3 SHA-256: 00bb02e52624e224889daa5d34911b366790fd045d332890b3f10cab400d3aa8
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document is identified as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The document contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing attempt. The ML classifier also strongly flags this PDF as malicious.

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
  • 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/strik?utm_term=dauphin+island+campground+site+map In PDF document text
    • https://pudisipilusive.weebly.com/uploads/1/3/4/5/134597375/2572448.pdfIn PDF document text
    • https://tuzibexidove.weebly.com/uploads/1/3/4/8/134852131/vodabikajalipi_tolitofuxelisem_vokesaz_sukepebix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491925/normal_5fb2847b08513.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/2692242.pdfIn PDF document text
    • https://jorojesa.weebly.com/uploads/1/3/4/8/134861508/34aa732b659fc.pdfIn PDF document text
    • https://rubosesizip.weebly.com/uploads/1/3/4/7/134744628/634817.pdfIn PDF document text
    • https://tifunubuxeji.weebly.com/uploads/1/3/4/5/134523212/0d2e0b7.pdfIn PDF document text
    • https://jevezorubik.weebly.com/uploads/1/3/4/8/134864628/44c8a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc36cac16f6d44b07cebbf4/t/5fc4cd073570fb44d199eb12/1606733064629/xemixubajipodi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5994a7848ba205d38a9b6/t/5fd6790f0f11661d4c2f3838/1607891215931/chrome_app_for_android_2._3._6.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d62cbdb33045eedb607b/t/5fc9a249414f5e352374eb29/1607049804077/jumia_online_shopping_ghana_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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3E3 5488 bytes
SHA-256: 78026de5accfda50f5a9d75fd821716207820ed1646c9aa757a3debce5c0bc66
font_01_sfnt_off0000d663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD663 10772 bytes
SHA-256: fde44af7fdbf6cbd1c719e6f9085eab69ad09e3c240548de378993bcef4b4bda
font_02_sfnt_off0000fb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB33 16164 bytes
SHA-256: 4b52fd5da643d9c08cc0a86f773b2f024e3274f3f861dfcac100db1ef433cf06

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