Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a90be19e1849201…

MALICIOUS

PDF

43.7 KB Created: 2020-08-05 02:22:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a0ab5381831addcdeeb7ba3f5d64e8b SHA-1: b6c458aaae5cc9ce2949c3e3a30cc324c1785db1 SHA-256: 3a90be19e184920121eea14faef2d85b36eff302fe74f9a998494f5a68a2f560
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body and embedded links present a lure for 'javascript tutorials', directing users to a URL that appears to be part of a link farm designed for SEO manipulation, ultimately leading to a malicious redirector. This suggests a phishing or malicious content delivery attempt.

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.ru/pify?keyword=javascript+tutorials+point+pdf+free In PDF document text
    • http://files.antiquecues.com/uploads/1/3/1/0/131070230/zunutuwip.pdfIn PDF document text
    • http://files.bgrtampabay.com/uploads/1/3/0/7/130739906/vikegexamaju_jikekud_gugisoroka_bavimew.pdfIn PDF document text
    • http://files.nevisatnight.com/uploads/1/3/2/3/132302944/bilegivitotexakuwezu.pdfIn PDF document text
    • http://files.brensuelabs.com/uploads/1/3/0/7/130740458/papopuduxizuzex_jelinu.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/1/0428/3020/0991/files/vididobevifurisegoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/10602289834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8221/1735/files/sugafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1097/2053/files/achieve_ielts_1_english_for_international_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1184/9890/files/ubuntu_install_postgres_9._4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3574/4673/files/92005938976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/melaliwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0926/9156/files/case_brief_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/sajedutatizolazirurelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6214/8763/files/totavigewuzu.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 5

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_off00006955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6955 5196 bytes
SHA-256: 85449829637a2fa2565e9813919250f71a3cd7af33d634fdc4826b2e5435556f
font_01_sfnt_off00007b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1E 12016 bytes
SHA-256: 577be1106179056e844c1af00acb4c43cf9542e966c8af95096230a8398cd6cd

Open this report in the interactive analyzer, or submit your own file for analysis.