Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f52371f8fd0510a…

MALICIOUS

PDF

46.5 KB Created: 2020-08-07 07:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5678975bebaaf7e7126cb75f00ec531c SHA-1: fff88d044d6542526baae3160c00e51df0d0b16e SHA-256: 9f52371f8fd0510a218f4df01a5d8c574c53fea22f1a21a93373d15010c16a08
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious URL identified is https://ttraff.ru/pify?keyword=plantas+de+casas+modernas+tipo+2+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to house plans and the tool used to generate the PDF, suggesting a lure to disguise the malicious intent. No scripts were extracted, but the heuristic firings strongly indicate a malicious redirection attempt.

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=plantas+de+casas+modernas+tipo+2+pdf In PDF document text
    • http://files.dubrovnik-coast.online/uploads/1/3/1/6/131606262/lugixipev-negemedukedineb-vugivuka.pdfIn PDF document text
    • http://files.protegeedu.com/uploads/1/3/0/8/130814056/6406953.pdfIn PDF document text
    • http://vixujite.lanefchocolate.com/uploads/1/3/1/4/131452883/9505298.pdfIn PDF document text
    • http://files.navsmainevent.org/uploads/1/3/2/7/132741029/5860581.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/1/0431/2550/6208/files/manualidades_con_reciclaje_paso_a_paso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/39177976793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2130/2935/files/wegixatirenixejamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51191810805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/kuzabipilivisuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4805/8536/files/62283729280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/6255619870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5865/8456/files/38247388294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/sugaxilabaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/non_empirical_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/48522243173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/wowuzosuzivuvaxunetaw.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 5

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_off00007213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7213 5436 bytes
SHA-256: c61d1e57a052755791537c4719d6132b4b3c2f7e6e2fdb85add46b9b07179f47
font_01_sfnt_off0000847b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x847B 11988 bytes
SHA-256: 49daed6be767ea54f927f1ce2ad705dec7e083bbc6569a70e4281a3e6d363407

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