Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf9f55ac971cc62…

MALICIOUS

PDF

48.4 KB Created: 2020-08-20 01:28:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d13e8af42ea73696a3cb81088d93cae SHA-1: d67ae827d41ed3925cc9f17dc6520061f198f04f SHA-256: ebf9f55ac971cc62763a0e70adb614ad27df7c5ad5dac60c851d82e7e5821819
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text related to Excel and a URL pointing to a redirector service. This suggests the document is designed to trick users into clicking malicious links under the guise of providing useful information.

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.com/pify?keyword=excel+merge+sheets+based+on+key In PDF document text
    • http://files.ctenbrinkphotography.com/uploads/1/3/1/4/131408942/fec7a8.pdfIn PDF document text
    • http://teruras.jairobanuelos.com/uploads/1/3/1/4/131412713/43802801.pdfIn PDF document text
    • http://wudin.castaicbassclub.org/uploads/1/3/1/6/131636612/1712995.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/1/0431/1223/5174/files/neriv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/14318766185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1362/7294/files/xaduzikazijufiwezobiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0639/9388/files/powered_by_phplinks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6593/3973/files/around_the_world_in_60_seconds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4214/3397/files/subarachnoid_hemorrhage_guidelines_2012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1833/3858/files/stokes_equation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/server_certificate_for_google_chrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4721/3464/files/67100545398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tekutuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9305/5904/files/fizek.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 1

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_off00007d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2F 5684 bytes
SHA-256: 28384255a6ad81ac7b7ea27f8311b57c3283ba5a5e42d990a7a8b68c593ed24b
font_01_sfnt_off00009064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9064 10652 bytes
SHA-256: d1ddc24bde45582db6ecb9f22eed29124b8b3752030bc7183ea9077c18dbb51c

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