Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8d315fe51fe5607…

MALICIOUS

PDF

44.8 KB Created: 2020-08-11 11:36:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66563c27fafe916883bb4bc0a1fa24b8 SHA-1: 5e856be246d7a500fc136e2dcc0a478f67c96848 SHA-256: e8d315fe51fe5607ff3986e5e0d7c25434e9738031d8e0c958d17aa409aa5dab
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the same as the one flagged by the redirector heuristic. This suggests the PDF is designed to trick users into visiting a malicious site, likely for further exploitation or malware delivery. No scripts were extracted from this sample.

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/wb?keyword=manual%20de%20enfermeria%20en%20cardiologia%20intervencionista%20y%20hemodinamia In PDF document text
    • http://files.nixageneralbaptist.com/uploads/1/3/1/8/131856129/nodalegot-pibupakude-rojoterupuw-vasedifowogivi.pdfIn PDF document text
    • http://files.nothingeasylifestyle.com/uploads/1/3/1/8/131872198/wogukopubipetiwefa.pdfIn PDF document text
    • http://files.aggressivehomeinspection.com/uploads/1/3/0/7/130776406/buzawive-wutivilifu-puzuwuvabug.pdfIn PDF document text
    • http://files.shiningjdairygoats.com/uploads/1/3/2/7/132740951/02fb06af91.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/1/0431/0827/0244/files/cephalometric_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4977/1427/files/foxagatemeguxoxeveme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6870/3398/files/local_anaesthetics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/pejaxaxugomadepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/cell_biology_test_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1041/3976/files/penodirofowegokiburepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0319/9133/files/zameliguzepatepajibif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/timozibanogesasemorufuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4922/0256/files/bejurewonuvofomasop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/41082691985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4555/9189/files/83538179321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.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 6

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_off00006cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC3 5604 bytes
SHA-256: cb52d9b955f59b8c15a2cf990e4447c9bc3b124708523e2a3440cbb51dcde18e
font_01_sfnt_off00007fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB2 10964 bytes
SHA-256: f4fbbdbb4635cf10e1d24d6427bf103c150f9d12e25b8f6639320e4b2a56ee52

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