Malicious PDF — malware analysis report

Static analysis result for SHA-256 0db30b5c6db47930…

MALICIOUS

PDF

40.1 KB Created: 2020-08-18 15:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03c981fdaa7781d161adadff6f81df77 SHA-1: bf10a0fc5b2146ec71377614db6e039ab2802d1e SHA-256: 0db30b5c6db479306adf7525eeeaef9b726e213fa2a52bfb2f1256e0fc5eb6cd
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to lure users with search terms like 'ncert class 11 biology text book'. This suggests a phishing or scam attempt to redirect users to 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=ncert+class+11+biology+text+book In PDF document text
    • http://files.bororunning.org/uploads/1/3/1/4/131407047/xagabenanovideze.pdfIn PDF document text
    • http://pebakoreg.ramirezpecanfarm.com/uploads/1/3/1/8/131871390/aa70f644bcade.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/1/0435/1796/8543/files/skyrim_guide_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/5999234353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3287/0037/files/where_does_pip_install_packages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5061/0336/files/landlady_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2935/1835/files/jalekikilekukuloseroved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8290/6789/files/dovalivoputedixose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/74868630054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/bhojpuri_gana_wala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/using_financial_accounting_information_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1229/1751/files/trans_siberian_orchestra_songs_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7173/1880/files/employee_performance_evaluation_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/breath_holding_spells_treatment.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 2

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_off00005f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F83 5360 bytes
SHA-256: 34d0f1767fd0d815b592fc15500bd161aa6c6806120184e333118f418bff2637
font_01_sfnt_off000071dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DC 9980 bytes
SHA-256: 8965bc0bcf931e6461bee45331773a257fd2a5bcf2dc4d9064e72fe29d87a111

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