Malicious PDF — malware analysis report

Static analysis result for SHA-256 65d27b36cdabdbae…

MALICIOUS

PDF

43.7 KB Created: 2020-08-11 04:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e689343c52fa4967db44a731b0b8bf45 SHA-1: 3e06db466863915547c573bbcd98e233c1919822 SHA-256: 65d27b36cdabdbae07db7dc933ea12dbb7099bdf900891cbb31848621bb67076
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at 'https://ttraff.cc/wb?keyword=tratamento%20choque%20neurogenico%20pdf'. The document body and heuristics indicate a lure to download further content, likely malicious. The presence of embedded links and the nature of the redirector suggest an attempt to trick users into visiting malicious sites, consistent with phishing or malware distribution.

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.cc/wb?keyword=tratamento%20choque%20neurogenico%20pdf In PDF document text
    • http://kodiri.vscl.org/uploads/1/3/0/7/130776088/8314060afe051.pdfIn PDF document text
    • http://radekeg.shelbysilver.com/uploads/1/3/1/8/131871390/9ec1c554.pdfIn PDF document text
    • http://files.16th-century-arts.com/uploads/1/3/0/7/130738593/zuwubonajoli-wazuzefisazu-wovowavub.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/1/0427/8901/1612/files/antibody_screening_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lamafavikunidamekisuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/58523860386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/data_analysis_using_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1174/3639/files/permanent_retirement_oblivion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/jupobum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/netozowuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/farmakodinamik_atropin_sulfat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5246/6325/files/fejub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/purakeboxitejiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1493/8014/files/cuentos_de_autores_latinoamericanos_cortos.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_off000067bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67BF 5436 bytes
SHA-256: be7795e1263b666a486f47bb0627dec46827e81b0889526f90760bc9a160d9ac
font_01_sfnt_off00007a00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A00 12728 bytes
SHA-256: 2363b5c4050f60f3de2fe7c04302940ad697cae22539fe4848778573e2d016f5

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