Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b66c934bd2e36f…

MALICIOUS

PDF

73.6 KB Created: 2021-03-22 04:29:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 09570c6916a202ad99691eceb8c2fb2c SHA-1: aefeb40614a05921aa68d6412b955eefdc643ae5 SHA-256: 00b66c934bd2e36ffa07720e7583036f710c3239ededdbb6d047560d80cdc306
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://ponafet.ru/123?utm_term=application+loader+3.+1 PDF link annotation
    • https://fixoxotogixas.weebly.com/uploads/1/3/4/3/134374926/pejudemugonemife.pdfIn PDF document text
    • https://rusuligoxajikug.weebly.com/uploads/1/3/4/3/134399392/9188174.pdfIn PDF document text
    • https://cdn.sqhk.co/wejafivelij/gfz4Chg/79429593431.pdfIn PDF document text
    • http://tikovg.xyz/boysen_paint_color_guidewaq8n.pdfIn PDF document text
    • https://fadusibolene.weebly.com/uploads/1/3/4/0/134042843/terawo.pdfIn PDF document text
    • http://pedron.fun/dofinegiwokonafaweo4use.pdfIn PDF document text
    • http://help-violation.com/ncdot_construction_manual9rl7s.pdfIn PDF document text
    • https://cdn.sqhk.co/sonometa/XjhifAi/hockey_statistics_jobs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4cd5eafb-d261-4666-a528-29b55b1676c1.filesusr.com/ugd/8dde66_13ad9047e1d241d8aaec3ce339f63ad3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lazesej/kdigo_aki_guidelines.pdfIn PDF document text
    • https://755d026c-fd58-4633-9ca9-8af24261f473.filesusr.com/ugd/4622eb_f3cfa64380ab4d878b9a9ac65c2c1559.pdf?index=trueIn PDF document text
    • https://521a9f5b-5c7e-4f25-a9e4-5446fb1b1975.filesusr.com/ugd/c1a494_efc2c4f1e6694851b70b663e5acfcea8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bulujono/78858563956.pdfIn PDF document text
    • https://e8c82854-2a0b-4c0f-82de-bac600ce06e6.filesusr.com/ugd/d017d5_5319e95749de42659089181e66a9ac2c.pdf?index=trueIn PDF document text
    • https://d86ad34a-7df2-4f47-937b-a12ab5abc0fa.filesusr.com/ugd/8cbfce_b3f3e6347ec34dada49201a5f1768a90.pdf?index=trueIn 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_off0000dfc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC4 5124 bytes
SHA-256: 9dd7ae9e69b7d88073b13ffe4a231c13213ca46a0d9e7fb9a5dbd66db45dc1bc
font_01_sfnt_off0000f14d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14D 11504 bytes
SHA-256: 28edd665f35e379e6f35989f0eedf566987ed8b1b80e02cc84d0f18efe4e7e08

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