Malicious PDF — malware analysis report

Static analysis result for SHA-256 17b6bad5d8b9786f…

MALICIOUS

PDF

42.8 KB Created: 2020-08-12 23:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5289332df5275af66b37c6dfb78474c2 SHA-1: 9a75302de1b743e0abbe2d516bc0da93e3c4ca85 SHA-256: 17b6bad5d8b9786f0733f8b9264c7f74e165713772eca0a1c8b164c9efb86997
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links pointing to redirector infrastructure, specifically `https://ttraff.com/wb?keyword=simple%20interest%20worksheet%202`. This redirector is associated with known malicious activity and is used to lure users under the guise of educational content. The ML classifier strongly indicates maliciousness, and the presence of numerous links to external PDFs suggests a link farm or phishing campaign.

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=simple%20interest%20worksheet%202 In PDF document text
    • http://xegidijun.thecornerofhealthandwellness.com/uploads/1/3/2/6/132681504/pebalisujesasu-lujonolulemafak.pdfIn PDF document text
    • http://files.hanleyvoices.org/uploads/1/3/1/4/131437385/6901146.pdfIn PDF document text
    • http://files.shorecapmgmt.com/uploads/1/3/1/4/131407635/3360892.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/1/0434/0151/1068/files/dekekorakotodaraf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3055/6320/files/87715106283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9289/6920/files/xipupesekudabogawutap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4885/files/apriso_mes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/busupekopekesup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/befalewimagufukuvogizol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7170/8065/files/53649282786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/lokejilagolepapomozunedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8939/3816/files/baby_names_in_sinhala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2427/5863/files/breville_espresso_machine_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6641/6549/files/nasetuwinovupezesilutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6026/4096/files/bimal_jalan_report_on_rbi_reserves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0919/files/97187960538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/apache_tomcat_tutorial.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000693a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693A 5240 bytes
SHA-256: e276e2ce2e3e77fd6aa328fcbcc56e662b13de79d6a7e925526ed081e964f0fe
font_01_sfnt_off00007af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF0 10432 bytes
SHA-256: 649938f509f575838b892b6177147837a513afa8a41a0e0ea33bbfb1506d775f