Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0a9e29664a7a1bb…

MALICIOUS

PDF

139.3 KB Created: 2021-04-11 14:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 86aed7a8094bfceb50c74390b950c5e8 SHA-1: 3dcbe81978e1453c1de716c83574f3c6441f019d SHA-256: c0a9e29664a7a1bb7385de6a1e1e3004f702700cf2359a83200f5f3e8de6c334
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded URLs, many of which point to disposable hosting and are structured as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://mezovuduw.ru/strik?utm_term=what+is+the+girl+scout+pledge PDF link annotation
    • http://biomaniks.website/21012693911fe6xt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448551/normal_602bde5ab06cb.pdfIn PDF document text
    • https://tomovomat.weebly.com/uploads/1/3/4/6/134617768/9a2a69e0896.pdfIn PDF document text
    • http://kzrovk.xyz/how_to_calculate_weight_of_fuel_oilr4mw9.pdfIn PDF document text
    • http://zanartcc.net/655052081307m54m.pdfIn PDF document text
    • https://sixagezox.weebly.com/uploads/1/3/1/6/131606695/4365550.pdfIn PDF document text
    • http://forecast.bet/59123228677a3k2q.pdfIn PDF document text
    • https://lexikusu.weebly.com/uploads/1/3/1/4/131438729/zozigakujowiwafo.pdfIn PDF document text
    • http://cabinetsapp.xyz/ccleaner_pro_full_keywuv4r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475375/normal_5fe72127c69c3.pdfIn PDF document text
    • https://gupufema.weebly.com/uploads/1/3/4/4/134456882/0a9286.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_6058db143f6a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488837/normal_6047275c8eae7.pdfIn PDF document text
    • https://zisatusomet.weebly.com/uploads/1/3/4/8/134872515/9865370.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/c2407096-65e2-4f25-9844-bbc980aaeee5/49527528461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ca69b92-2ac7-4d14-80eb-8491e839f603/puvaberi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fa9a91d-2903-46d3-99d2-db933a78c55a/why_is_there_a_snake_on_the_join_or_die.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63c36c11-b358-447e-9c7f-c6ef4bae8002/delikajezenu.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_off0001e427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E427 5348 bytes
SHA-256: 0fe17589ea6333ce775fc282a15d2795b23664ca5dcc702f18bf5af03b932275
font_01_sfnt_off0001f65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F65B 12252 bytes
SHA-256: 7b435e86a2380a50ad0b8ba9c7d484f3a17e80eddd1fc7239afa15b7fb60d5de

Open this report in the interactive analyzer, or submit your own file for analysis.