Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a7fb465772c65c1…

MALICIOUS

PDF

101.3 KB Created: 2020-08-22 11:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53fd59896a5d06cead2f36a51f641473 SHA-1: 5f2820418b4c996680aa2a70accb4f43b47abe07 SHA-256: 4a7fb465772c65c100a99dda3035f3d58c91c84eed53c348c8d7e00af8f13c3b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the text 'Eugogo guidelines pdf' and the malicious URL, suggesting a phishing or social engineering lure. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a larger link farm, likely for SEO manipulation or to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.ru/pify?keyword=eugogo+guidelines+pdf In PDF document text
    • http://files.escobarlab.com/uploads/1/3/1/8/131856454/gedajot.pdfIn PDF document text
    • http://fujit.mindbloggings.com/uploads/1/3/1/3/131380042/dasejolirexuj_pexuro_suxixuk_rizifati.pdfIn PDF document text
    • http://files.inkandoakdesignco.com/uploads/1/3/0/8/130814120/644b8e229a.pdfIn PDF document text
    • http://files.argentcymrustandardpoodles.com/uploads/1/3/0/7/130775446/logebivoworum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/31419550390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/xigulijilasore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/sawinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/subupawovak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/zexipigelaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/interior_design_course_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7124/2391/files/38390834103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2552/3103/files/apk_cheat_game_android_terbaik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5654/6463/files/delolimasijujukerobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2282/8198/files/wizikivolekedato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5208/3873/files/19731953950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/organic_chemistry_marc_loudon_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zodotuxufaliga.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000135ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135CA 4860 bytes
SHA-256: 9ed05da70711a1537cecd43632b32b62d72465e9aa6a097376a944be42f128da
font_01_sfnt_off00014671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14671 13856 bytes
SHA-256: 97a45733eafd69f12e5e4b8efbdef471c1bb8379f74351a4bb11e3a7b8c929eb
font_02_sfnt_off0001727e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1727E 16148 bytes
SHA-256: ebaa9d42c58e3fd25c8264bcf4ef2319fee467c92cf53dcc1f377a20fc8d39b0