Malicious PDF — malware analysis report

Static analysis result for SHA-256 16ce1124e472347c…

MALICIOUS

PDF

47.3 KB Created: 2020-08-03 14:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ff186a30ea8fd9fbecf8e4b65eff9cc9 SHA-1: 9aa9fdaf39b5c9ff14db64c2c12b36fc3ef1cac7 SHA-256: 16ce1124e472347c7cc80bc1b74cf8ec73afa725daf95d25d04551ea43cdcdb9
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL is https://ttraff.ru/pify?keyword=centella+asiatica+medicinal+uses+pdf, which is flagged as malicious. This indicates a link farm or phishing attempt designed to drive traffic to malicious infrastructure. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=centella+asiatica+medicinal+uses+pdf In PDF document text
    • http://files.tyjministries.com/uploads/1/3/1/3/131398154/funutopafelupujepi.pdfIn PDF document text
    • http://files.barrycolonfitnessrus.org/uploads/1/3/1/0/131070366/tukokuf_nilix_wiviwe_lufejite.pdfIn PDF document text
    • http://files.microbeautybykaylen.com/uploads/1/3/2/7/132710779/luwajurob.pdfIn PDF document text
    • http://files.deannabaldi.com/uploads/1/3/2/6/132695679/risalajadinobon.pdfIn PDF document text
    • http://files.machenenterprises.com/uploads/1/3/1/0/131070362/7083326df79a9.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/1/0434/7274/8710/files/taviwapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4742/6965/files/pawokofaxufarazebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/zetudelugorupabukajareri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9999/4789/files/srimatudu_movie_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/megojaxiredaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/72215294880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7932/7141/files/figabezuvegavajuxevupuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62386903812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8948/4190/files/57886033828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5552762143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8879/6053/files/gumidogigez.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_off00007c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C65 5108 bytes
SHA-256: 644a35659576687f2e27d2092d1cc214158f4d0d0ba5daaf3927523f64cb3e10
font_01_sfnt_off00008db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB6 9908 bytes
SHA-256: 34f3e36736f37a70a0eb76bdb885c7cb75df33b3c4f7417be1ba2e074d775b05

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