Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f3a314be6b2410…

MALICIOUS

PDF

42.4 KB Created: 2020-08-11 02:50:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be8e3c03f7025e61b84c7579a8069c59 SHA-1: cd7581f90e9399f5919630bada93ad3b113a988a SHA-256: 58f3a314be6b24101681eee86895b17f11fd61b307138952b1c30816446ee4ab
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 known malicious URL, indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the text "Riva aquarama plans pdf" and the malicious URL, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, likely for SEO manipulation or to host further malicious content. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=riva+aquarama+plans+pdf In PDF document text
    • http://bikop.atlanticlawjournal.org/uploads/1/3/1/1/131164250/d7fda8fac8426b.pdfIn PDF document text
    • http://files.suelacy.com/uploads/1/3/2/8/132814166/212f7a261de9009.pdfIn PDF document text
    • http://files.conniemorey.com/uploads/1/3/2/6/132695343/dunetaxono_jadonoz.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/1/0428/1945/3095/files/roroselovopexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2946/2165/files/python_f_strings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/49675440591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/tezomupatatowitujiwotig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/fatikuronefojotumozon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/34796957335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/derubobiruruvur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/myers_briggs_test_questionnaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/46685042212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4173/4311/files/81685894105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4944/1688/files/cambridge_primary_progression_test_past_papers_english_stage_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2548/9305/files/download_al_quran_indonesia.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5856 4376 bytes
SHA-256: 6b0e285406da7f81f080e4c0bf6a71e58beb0507db38986677277bffbbfafd5e
font_01_sfnt_off000067b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B3 5380 bytes
SHA-256: 038f048b0232e2ca6b8cfd89a5dd986867eac313fa77c12c031eeaa3a6fc7eb8
font_02_sfnt_off000079f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F1 10176 bytes
SHA-256: 242406d2a20be6fe18c4f9ee6e4eb7ccf7fb03e463d9923a2233a89ce1534891

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