Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a7134e3abdfb036…

MALICIOUS

PDF

43.3 KB Created: 2020-08-28 03:28:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9cf0f242db4a11d507340010d02bee4 SHA-1: 9d660b4851f9331330a063799f35535d45aa0efb SHA-256: 5a7134e3abdfb036b8578f518d40957da834af9fcc720526129900c20ccc29f8
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to educational subjects and a URL that appears to be part of a link farm designed to attract users. The ML classifier also strongly indicated maliciousness.

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.link/pify?keyword=sujet+bac+enseignement+scientifique In PDF document text
    • http://fadopimen.brandonbarrowscomics.com/uploads/1/3/1/4/131408027/5fb8ff78e94209.pdfIn PDF document text
    • http://files.vancepta.com/uploads/1/3/1/8/131872021/236b64e.pdfIn PDF document text
    • http://lotolo.spaceairforce.us/uploads/1/3/1/3/131378814/rulibemejaradifipe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0342/0570/files/57462827691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2518/4421/files/median_from_frequency_tables_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/8815/1458/files/black_high_heel_platform_shoes_suede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/home_automation_system_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/xodubujomaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/38940691413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/south_african_tax_invoice_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1653/4685/files/toromaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jatud.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADA 5288 bytes
SHA-256: fb20920e47fb4537b9ec28459ca5b1953a0f648a8c50a37b605e355d3e96e4b9
font_01_sfnt_off00006cc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC5 11264 bytes
SHA-256: 2075ca00b6fa25125461b29e12e30cb441d7f4ec5f0c4915df836fc8fc56da99
font_02_sfnt_off000090cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90CF 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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