Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abbf3821bb53526…

MALICIOUS

PDF

65.2 KB Created: 2020-12-04 07:10:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 4365c7d4a7219ea81e3b5f858b4a641c SHA-1: ee9696c034e2abcba4d21e68182abfb1007893bf SHA-256: 0abbf3821bb53526ad59a4a53b0f31b2fee361c1326408633e526e4c5cb16aaa
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting services, and is flagged as a link farm. The embedded content, though heavily obfuscated, suggests a lure for 'educational cartoon videos free'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution via these external links.

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://traffnew.ru/aws?utm_term=educational+cartoon+videos+free PDF link annotation
    • https://mexejafulid.weebly.com/uploads/1/3/4/8/134880369/00ad8f4da1599b.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/pekaberosevaji-navoxojulan.pdfIn PDF document text
    • https://dewajijivixire.weebly.com/uploads/1/3/4/6/134638152/9676429.pdfIn PDF document text
    • https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/5901722.pdfIn PDF document text
    • https://xekixudag.weebly.com/uploads/1/3/4/3/134336078/zarixo-luzojuridufada.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/rebodi.pdfIn PDF document text
    • https://palifeselaliku.weebly.com/uploads/1/3/4/4/134441248/a09883e1d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413975/normal_5fb2ea4e358f4.pdfIn PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/affd96fc6f7.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/5fc1630612facd59ceb05ffc/t/5fc8b64a13de6e7981611df3/1606989387021/gurimopazikunijapegesunuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40bece2e-9536-40a0-b5fb-8a222864e16b/ribusuxitomolaserom.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3d8d31452f90b7ff7981f/t/5fc663a0fa04221c71faed31/1606837154204/56035724404.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd02b4cc750a3b5a06f7cd/1606222518838/maboxe.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_off0000c3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3E5 5032 bytes
SHA-256: 9870f35cc9dbbd6b73cba8b28f011a820e5c3f10d5f5c04c632ee0f14a5bf559
font_01_sfnt_off0000d51b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51B 10396 bytes
SHA-256: dbfb70c4f18cbfdc8674fcbd1571f353f63ee3f7519b939820b7d99732b5dd09

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