Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b265dce75eccefd…

MALICIOUS

PDF

48.9 KB Created: 2020-08-14 11:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7ae94c3bfa5844c6fe973cfbf9bb74a SHA-1: 88ef25a86ea1f03b66e26ce5e356a73650bbfe72 SHA-256: 6b265dce75eccefdc9dad71ed0defbf4652a869a225093772d6b6260b53a506e
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service identified as malicious. The document body, though obfuscated, suggests a lure related to 'clinical practice guidelines' to entice users to click these links. The presence of a large number of external PDF links indicates a potential SEO manipulation or phishing scheme, aiming to drive traffic to malicious or low-quality content.

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=clinical+practice+guidelines+gestational+diabetes+mellitus In PDF document text
    • http://files.sftint.com/uploads/1/3/2/3/132303270/lazoniludex_duguxumigafoxaj.pdfIn PDF document text
    • http://files.ivcsudh.com/uploads/1/3/1/3/131379692/lobopizikut.pdfIn PDF document text
    • http://munaponek.howlinwolfhounds.com/uploads/1/3/1/1/131164250/zigixabe.pdfIn PDF document text
    • http://files.onehumanfamily.org/uploads/1/3/0/9/130969370/dipoje-kixevomit.pdfIn PDF document text
    • http://xaver.yubakids.org/uploads/1/3/1/8/131872225/1882490.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/1/0434/4306/0901/files/1996_honda_shadow_1100_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5050/6142/files/81408382429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9753/8203/files/96675476565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8638/4023/files/46426423787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/degobik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5913/4112/files/rivarefadapuvajerok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6509/5845/files/82955428425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8342/2109/files/69218118574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/berujixawajibexuxutuzogar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0538/6647/files/sorujesugazedumunufavema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5178/6135/files/ruvurewojaseda.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_off00008014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8014 5436 bytes
SHA-256: 858f74c1b0b7c1e5955ce602faa395574ab09145974b4e662009a13179d83b54
font_01_sfnt_off0000926c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x926C 10352 bytes
SHA-256: d901caea80de0bcf9ffa3c05b6c2f7d3cf498e7cbd481866710576895017b268

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