Malicious PDF — malware analysis report

Static analysis result for SHA-256 2438fee63af357a7…

MALICIOUS

PDF

100.9 KB Created: 2020-07-29 00:45:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56e54c8f13c5de9aeaa6412bb72dae20 SHA-1: f60bb81699b7420fa4decc8b0f890bd415d4b173 SHA-256: 2438fee63af357a75af43b091ef51f4ddd6b6d1d0b23b1d5a8ed610df6d3e47e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=thoracic+aortic+aneurysm+screening+guidelines', which is likely used to redirect users to a phishing or malware site. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

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=thoracic+aortic+aneurysm+screening+guidelines In PDF document text
    • http://files.nrgphotography.com/uploads/1/3/0/7/130776272/5038336.pdfIn PDF document text
    • http://files.nbctechnologies.com/uploads/1/3/2/6/132683357/sepanar-lupujo-mivorobeku.pdfIn PDF document text
    • http://files.nationalmustangday.com/uploads/1/3/0/7/130739147/satofurog.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/1/0430/3169/1421/files/suzafazobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1542/1600/files/fajoduvekevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4202/9224/files/wofasogavanesene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/soxikekinetiwarulokupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/78515560782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7967/7590/files/patawumogajizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0774/5958/files/66480705394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9450/6661/files/86048038555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2952/6688/files/53334694550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1145/5645/files/nipinegek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0319/8116/files/dubaxigafo.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 2

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_off000142ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142CE 5284 bytes
SHA-256: 3e7bc935979ea4aef1c00f6bfc575dc6fbbd480b59a78e2dc0b839d493c71c32
font_01_sfnt_off00015499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15499 15676 bytes
SHA-256: 5f0c156dbdced99396b5287630b2444a9250356a7153cf9f4a7de8b64334df7e

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