Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda5969b123d9abf…

MALICIOUS

PDF

38.8 KB Created: 2020-08-10 11:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a376cb91ac3e75687e46977e7a83039f SHA-1: b89b5479c78ff758836e9d569c28016f6196deb1 SHA-256: fda5969b123d9abf89012026d1c407048abfafe55dada9768382ea937c2fe734
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 a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be the initial lure for users to click on the malicious links. The primary attack pattern involves luring users into clicking links that lead to malicious sites, likely for further exploitation or credential harvesting.

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=baixar+em+pdf+gratis+livro+de+romance In PDF document text
    • http://files.sadhanayama.com/uploads/1/3/0/7/130776016/xuruwanuli-sepajujowij-mufeg-gebubizunesipel.pdfIn PDF document text
    • http://files.minesphotography.com/uploads/1/3/1/3/131380005/5075695.pdfIn PDF document text
    • http://files.daviddostilioart.com/uploads/1/3/1/3/131398143/tokijukamuziw-rulivi.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/1/0429/8260/4963/files/5280334093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8048/9891/files/bejaxosowatosolazuworive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0546/8068/files/21169203726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5407/8883/files/air_pollution_notes_vtu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4350/0710/files/central_park_musso_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/php_extract_number_from_string.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0594/3701/files/28969718300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/have_courage_and_be_kind_cinderella_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4962/3462/files/avon_brochure_june_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/stealth_seduction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5267/9836/files/financial_accounting_fundamentals_5th_edition.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 7

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_off00005896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5896 5652 bytes
SHA-256: 5fc48407c6392c96df90a23a8bf49c6424318d380ccc5a952e1b32471921245e
font_01_sfnt_off00006bcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCD 10096 bytes
SHA-256: e7086aa98f7ece58760a937c6e60a396ce61dae1750ca6de341ebbaa0246ebc1

Open this report in the interactive analyzer, or submit your own file for analysis.