Malicious PDF — malware analysis report

Static analysis result for SHA-256 6236fddf1972aaa9…

MALICIOUS

PDF

67.6 KB Created: 2021-01-20 16:35:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 4f21465751068dfd7ca5c7b7b4971250 SHA-1: a834475cab0b558e1d40119063b61135641b9877 SHA-256: 6236fddf1972aaa951c28b0df659ea60ded473933e3c4c1a87a3d207d468d664
196 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristics. It contains numerous external links, including the primary redirector URL 'https://trafffi.ru/123?utm_term=all+the+king%2527s+horses+vonnegut+pdf', which likely leads to malicious content. The ML classifier and ClamAV detection strongly support its malicious nature, classifying it as a phishing trojan.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffi.ru/123?utm_term=all+the+king%2527s+horses+vonnegut+pdf PDF link annotation
    • https://taxajefikudo.weebly.com/uploads/1/3/4/7/134765143/bazipasirokig.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/hhiphdx/98139475264.pdfIn PDF document text
    • https://nalokulomegeze.weebly.com/uploads/1/3/4/7/134758193/sezijuzupibogofewo.pdfIn PDF document text
    • http://dixajadabaw.66ghz.com/consolidate_excel_data_from_multiple_sheets.pdfIn PDF document text
    • https://bikigevoxepasi.weebly.com/uploads/1/3/4/7/134716722/20a7b0b976.pdfIn PDF document text
    • https://xebolefijepipol.weebly.com/uploads/1/3/0/7/130739937/831d2ac9ddb77.pdfIn PDF document text
    • https://xawimoveparuz.weebly.com/uploads/1/3/4/0/134040397/8852260.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/jhihUgj/sotusevij.pdfIn PDF document text
    • https://loxerujose.weebly.com/uploads/1/3/0/7/130775489/5997305.pdfIn PDF document text
    • https://cdn.sqhk.co/gekobegij/XYhgWjf/40296817819.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/dagezu.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/506450379.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/lopulitikawoveg.pdfIn PDF document text
    • http://xorikija.epizy.com/kukeruzijamijip.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/ausfund_withdrawal_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/choo_liya_choo_liya_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/comments_for_progress_report_preschool.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/53770553579.pdfIn PDF document text
    • http://bitinorakinin.epizy.com/inventory_items_report_in_quickbooks.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_off0000ca2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2E 5240 bytes
SHA-256: 6bcb2e433fa2820890f6bd1ec7ae94ce6e946d6256ad7dd5bac6d3fc706ba0e5
font_01_sfnt_off0000dc13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC13 10868 bytes
SHA-256: 0c613079a0bff162aa873b4a010d8f764fc90cd41b2f6044ad0a33a6890dd120

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