Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7266f1a896a1a00…

MALICIOUS

PDF

38.0 KB Created: 2020-08-18 19:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4efc79c39161f314b18957ee05fd8980 SHA-1: a27544923a31d6039485d0faaedab128935e4412 SHA-256: d7266f1a896a1a002297170af5614bb719f8fed286df2fac0da57cdbc1eeb20d
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs. One URL, 'https://ttraff.com/pify?keyword=bratstvo+crnog+bode%25C5%25BEa+4+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on CDNs. This suggests a campaign focused on SEO manipulation or redirecting users to potentially harmful 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.com/pify?keyword=bratstvo+crnog+bode%25C5%25BEa+4+pdf In PDF document text
    • http://nifuvepu.dragonflyguitarcoaching.com/uploads/1/3/0/7/130776445/vezelorabuxis.pdfIn PDF document text
    • http://xurekaj.mixfruitonline.com/uploads/1/3/0/7/130775388/bewutudegu.pdfIn PDF document text
    • http://sobalaf.travelogues.smifh.com/uploads/1/3/1/4/131454012/234825.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8103/1064/files/78115894465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/91923870333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/fenakegofilolukalene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/cash_flow_statement_class_12_cbse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6810/4610/files/60686730252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7308/files/51607536579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/jinedanobasuxagifazopet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1687/0296/files/writing_activities_for_kindergarten.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4573 5448 bytes
SHA-256: e4a574d8a91e38d60496adf24e252aaf3cb98e48a1c21debb31f33db896da856
font_01_sfnt_off0000580e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x580E 10472 bytes
SHA-256: 4e3c0f519f17c9646e91eb835e215a1e7c68476dc9393c1cf6e7f1eb813dacb5
font_02_sfnt_off00007bc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC6 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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