Malicious PDF — malware analysis report

Static analysis result for SHA-256 014e98daac925374…

MALICIOUS

PDF

32.0 KB Created: 2020-11-07 00:46:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0460452df999633ec7a6394a62c75f91 SHA-1: 93122f2eb6472302d4fc7456706ca57a8ff0812e SHA-256: 014e98daac925374a3a8413cba8f463f70c2b57f4016eb38b5a41abe876d76cd
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://trafffe.ru/aws?keyword=little+alchemy+2+unblocked+games+66 PDF link annotation
    • https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/2d234d26c.pdfIn PDF document text
    • https://xetibipu.weebly.com/uploads/1/3/4/5/134528590/punak.pdfIn PDF document text
    • https://vixalabalu.weebly.com/uploads/1/3/4/3/134396729/bavogusopu-xotukivitarusi.pdfIn PDF document text
    • https://fobaripiso.weebly.com/uploads/1/3/4/4/134443650/vijorubelowodo-zonuwazedenup.pdfIn PDF document text
    • https://pesodubebugi.weebly.com/uploads/1/3/4/2/134234841/7f395d5ef7e77c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://zujuvigewif.files.wordpress.com/2020/11/sociedad_en_nombre_colectivo_mexico.pdfIn PDF document text
    • https://tumitom.files.wordpress.com/2020/11/wovibidel.pdfIn PDF document text
    • https://mogogupiwilu.files.wordpress.com/2020/11/48216874773.pdfIn PDF document text
    • https://tibepitetuj.files.wordpress.com/2020/11/56891646696.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/la_cocina_de_la_escritura_resea.pdfIn PDF document text
    • https://lalesadu.files.wordpress.com/2020/11/nupurowovuzonutilupip.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/figurative_language_basketball_game.pdfIn PDF document text
    • https://wixisodek.files.wordpress.com/2020/11/mafali.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/vifosero.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41A8 5788 bytes
SHA-256: b2112d8c985b467faf903ba4047bae93dfc092bbe8149dcc88230d36d1280393
font_01_sfnt_off00005548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5548 8860 bytes
SHA-256: acf24cae82f3be64f532f8a722d7aa9739cbcc4c72ecca2672d0cd610f7bca8a

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