Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b0a0ee73f7ed83c…

MALICIOUS

PDF

44.0 KB Created: 2020-11-07 17:38:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 1ba36181eb9f2f0cdaec300f23370eba SHA-1: 67fbf436d72f3b951bd91178378f5c77245e6bd5 SHA-256: 3b0a0ee73f7ed83c6044db46dfc4e11d01f8b2f279b13eefff8d6a2488fc9db2
184 Risk Score

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://traffmen.ru/123?keyword=chemistry+of+life+worksheet+1 In PDF document text
    • https://juzolafer.weebly.com/uploads/1/3/4/3/134382033/3777726.pdfIn PDF document text
    • https://vomediwanuxorat.weebly.com/uploads/1/3/4/3/134327005/7b17741.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/nilamirosimali-roxufuju.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/fixumadamiwiga_vawefibegegejij.pdfIn PDF document text
    • https://xiletepegokif.weebly.com/uploads/1/3/4/3/134319576/6541231.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/dunewegil-ratifibuwufowe.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/8502473.pdfIn PDF document text
    • https://nidixinaxob.weebly.com/uploads/1/3/0/7/130739699/c3b9d17.pdfIn PDF document text
    • https://xovadodelemowuz.weebly.com/uploads/1/3/1/3/131383330/5713311.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/3598413.pdfIn PDF document text
    • https://xeponadutowa.weebly.com/uploads/1/3/4/6/134612209/d8f6f81.pdfIn PDF document text
    • https://junafoxotoroj.weebly.com/uploads/1/3/0/7/130738975/pumuvivar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/55a71918-7f57-41fa-a352-73dba37f1edb/chick_fil_a_chocolate_chip_cookie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a535af59-60fd-4cf6-8895-a891085e82de/laverifelunagu.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_off00006f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F07 5012 bytes
SHA-256: 99c60052a4b5c10927a037bbfc83bb294762ba30a1c7925029b8e631a4c0361f
font_01_sfnt_off00008000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8000 10200 bytes
SHA-256: 2288b57c29fe74d38d3e06a54766a293e9e2dd775b8b3821293a794180592b05

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