Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd9a49ff982af79…

MALICIOUS

PDF

41.6 KB Created: 2020-08-07 09:25:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3c5fb5a47439488a0d8b03222321c73 SHA-1: 278c375d42975a184adc65b5fcc08f5f99122676 SHA-256: ddd9a49ff982af791289c4d606077e73f3c4f85a6eafef15d7d28e24a57ac7b9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One of these URLs is identified as a malicious redirector, suggesting an attempt to lead the user to harmful content. The presence of a large number of external links, including the redirector, indicates a likely attempt to distribute malicious content or engage in SEO poisoning to lure users to malicious sites.

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=linux+application+programming+interface+pdf In PDF document text
    • http://files.magicsdreamescapes.com/uploads/1/3/0/8/130814205/wenavekuzo.pdfIn PDF document text
    • http://files.lebanontours.online/uploads/1/3/1/8/131856306/5832704.pdfIn PDF document text
    • http://luzuwa.sharonlillart.org/uploads/1/3/1/3/131384401/fivubivaluma-nitokixus-tebijobagabiw.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/1/0434/2094/2486/files/wowedifijofuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0004/4440/files/across_the_bridge_mwangi_gicheru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/kopaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5920/7582/files/aptransco_syllabus_for_eee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9721/7440/files/thailand_political_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5950/3519/files/87142945657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/37719226960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1493/0084/files/22755694888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/39421043594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/acto_administrativo_peru.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 4

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_off0000647a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647A 5308 bytes
SHA-256: 14a099b4bda7d683e1d2da6794c68ec4cf6e6d47bec5313a62a727937478807c
font_01_sfnt_off0000767c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x767C 10216 bytes
SHA-256: c86b6b5d65390d91a2c2e9035bf04b01ed6d94a3693f420618ffe569ca441b17

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