Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ae427f3d7a1f673…

MALICIOUS

PDF

37.1 KB Created: 2020-08-27 13:18:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f2b11dfde95325eddc65a38a0f1900a SHA-1: e9f6f44a2fce4a8a198e701efee7a5b2468baeb4 SHA-256: 0ae427f3d7a1f673d913e7baee08a3a975bc73223022c2097b598306c52d53d9
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body and heuristics indicate a lure related to 'bookman antiqua font' and SEO link farming, suggesting a phishing or malware distribution attempt. The presence of multiple PDF links and a critical redirector link firing strongly supports this attack pattern.

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=bookman+antiqua+font In PDF document text
    • http://zakabox.extratimeconcierge.com/uploads/1/3/0/7/130775565/fc095a32a7.pdfIn PDF document text
    • http://mejar.nutterscrossingcommunityhoa.com/uploads/1/3/0/9/130969130/b7a4bae2c.pdfIn PDF document text
    • http://vuxez.sofieball.com/uploads/1/3/1/1/131164250/jodaboxodinatesev.pdfIn PDF document text
    • http://xokagof.mijunktiquescollection.com/uploads/1/3/1/4/131453870/1616453.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/1/0444/4468/0359/files/azkoyen_zen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3934/files/analytical_chemistry_skoog_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1416/7450/files/67173127965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/apa_itu_anoreksia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3972/7509/files/losoponedipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/tegobos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/5031661539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/87553389812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7093/9293/files/31884424560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3305/9737/files/divina_commedia_con_note.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/chicken_farm_business_plan_template.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_off00004f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F68 4844 bytes
SHA-256: c68032ebc5c39a4d2774086778fecd0885397d0c54a2088ba6b81c348d28e026
font_01_sfnt_off00005fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDE 11972 bytes
SHA-256: 9215963532cd3e182cf59987d44ddbb8b0ee007e6472b367d43d2dd6853b6de1

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