Malicious PDF — malware analysis report

Static analysis result for SHA-256 394eed54b621196d…

MALICIOUS

PDF

43.1 KB Created: 2020-07-30 09:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 017ea78366080006c4ee93a1c7ea70af SHA-1: 3eaadd49663fbb766b686a7369c7e2c0adb7f484 SHA-256: 394eed54b621196de27d884127e5d768bac6d68d3d3fb6f574c7fe4ff84cdd61
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as an orthopedic clinical examination document. The link points to 'ttraff.ru', which is known for malicious redirection. Additionally, the PDF includes a large number of external links, many hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. 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.ru/pify?keyword=orthopedic+clinical+examination+pdf In PDF document text
    • http://files.mychangingthenarrative.com/uploads/1/3/1/4/131437736/264d566d1c42.pdfIn PDF document text
    • http://files.rachelliesphotography.com/uploads/1/3/0/7/130776277/814de915.pdfIn PDF document text
    • http://files.dianashepherd.co.uk/uploads/1/3/0/7/130739144/nafav.pdfIn PDF document text
    • http://files.bestyoulife.com/uploads/1/3/1/0/131069869/4484314.pdfIn PDF document text
    • http://files.dublinbirding.com/uploads/1/3/1/0/131071252/e506117db8.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/1/0435/3579/4327/files/81545262520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/vuretijuponogasona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2541/6860/files/ladolewisevut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3707/2280/files/furunex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9504/files/wabuxotidilisugipuxowid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2566/9028/files/56966525878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31903895201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5012/9813/files/62527106721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/tusunuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibamiwa.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 8

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_off00006ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA8 5100 bytes
SHA-256: 9c249158f67ff8fe329080c68a1afe2e58b1656c7b92d5940bce3aed322be2e1
font_01_sfnt_off00007cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD5 10000 bytes
SHA-256: 76852d18f4a43bc5dfb4882a362b9c179fe526eb9dabaaba401e7c16bec65265

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