Malicious PDF — malware analysis report

Static analysis result for SHA-256 b952b8be5daf584e…

MALICIOUS

PDF

39.6 KB Created: 2020-08-06 20:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d9262a9872948680752596c61db9b6d SHA-1: 9fbcb55d318005156e06de94ecb466a51026efd6 SHA-256: b952b8be5daf584e7e8d13f199d68a5c64079a19f61c29aed1c7b2f6df1f4ee5
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a PDF related to school exercises, likely a lure. The primary malicious URL is https://ttraff.cc/pify?keyword=br%25C3%25BCche+k%25C3%25BCrzen+6+klasse+%25C3%25BCbungen+pdf, which is designed to redirect users to further malicious 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.cc/pify?keyword=br%25C3%25BCche+k%25C3%25BCrzen+6+klasse+%25C3%25BCbungen+pdf In PDF document text
    • http://files.3bugfarm.com/uploads/1/3/1/6/131636655/nobamasuzikab.pdfIn PDF document text
    • http://sovoruso.savt.ie/uploads/1/3/1/6/131607600/2073126.pdfIn PDF document text
    • http://files.thecbdshoppe.net/uploads/1/3/1/6/131636655/3307238.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/1/0431/2514/5760/files/mukawovag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2846/3271/files/54948636671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/zebegedanutolusawan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7620/6240/files/77656408984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0775/2866/files/48835143466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4343/8242/files/50358208848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5430/9274/files/kujabisozux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2807/0052/files/49167094105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4697/7188/files/99733424161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9212/2527/files/acrobat_pro_reader_free_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C3 5992 bytes
SHA-256: f9772d1d6861c71c23d973cac11103deb9e898c0ff8b3e4b55718b58447f969f
font_01_sfnt_off00006bef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEF 10876 bytes
SHA-256: 01a37060de240e387cbc7feca21495ac10a42faeaaf09e16bdafa7ccb741d5fc

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