Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f1123fbc5f7d50…

MALICIOUS

PDF

49.0 KB Created: 2020-08-04 15:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0e0e62782039298f27d37352898125db SHA-1: 752541128b3a463add612691c225552149fe0a85 SHA-256: 20f1123fbc5f7d505a6ca4592852f99870ff42e22fb826373e69b88b7f84b3b0
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector, ttraff.ru. The document also exhibits characteristics of a PDF link farm, embedding numerous links to other PDFs, many hosted on Shopify. The primary malicious link is designed to redirect the user to potentially harmful content, likely for further exploitation or phishing. No scripts were extracted from this sample.

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=surface+area+and+volume+of+rectangular+prisms+pdf In PDF document text
    • http://files.nycmetrostars.com/uploads/1/3/0/7/130738764/sumuwi.pdfIn PDF document text
    • http://files.westgarthpharmacy.com.au/uploads/1/3/0/7/130739174/fufajolegukago-safukoxave.pdfIn PDF document text
    • http://files.seafieldfarmva.com/uploads/1/3/0/8/130874125/6677232.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/1/0431/7279/0432/files/50936997120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1285/6731/files/pifabaxopomum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/kibeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/resto_druid_icy_veins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4216/8218/files/74073058451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5894/4405/files/fukadulovexir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/zetikodisavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/51101002739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3001/2316/files/48445186441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1522/4996/files/88337434039.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BD 5636 bytes
SHA-256: 25329da8a7a0a7effb1098960830e57aa972d91aedca81a0ab11b406f62d860e
font_01_sfnt_off00007bdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BDB 10488 bytes
SHA-256: 0e4d4bd1e4420f7ddd6524a3f05b62a2951c578d88f0eb3fd3437dc4966c8501
font_02_sfnt_off00009fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB2 16808 bytes
SHA-256: 832b65e3839e5e4dac2b521176db1e469009e7a6e7fa1ce9c2cb15d72b0d3c09

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