Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d7998033d5a8e5…

MALICIOUS

PDF

43.9 KB Created: 2020-07-31 14:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aabd2e627d2e4f6979b3a5dc2fe1e605 SHA-1: 5b97d9e0405e6538bf4ad499c09c0768aa298b32 SHA-256: 30d7998033d5a8e5305b1bf884458335dc27b21c793dd2bd2b125cfd0e74a04a
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a significant number of embedded external links. One of these links points to a known malicious redirector. The document body appears to be malformed or heavily obfuscated, preventing a clear understanding of its intended lure.

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=org.+apache.+poi.+xwpf.+converter.+pdf.+pdfconverter+jar+maven In PDF document text
    • http://files.timothygaewsky.com/uploads/1/3/1/3/131397964/kesakez_bisonema.pdfIn PDF document text
    • http://files.vullowisp.com/uploads/1/3/1/1/131163774/rubabefozet.pdfIn PDF document text
    • http://files.texaslonestarrug.com/uploads/1/3/1/4/131407138/zegazodisulababo.pdfIn PDF document text
    • http://files.customcraftedsongs.com/uploads/1/3/1/0/131071043/zijudepi.pdfIn PDF document text
    • http://files.ntfbiac.com/uploads/1/3/0/8/130813973/reped.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/1/0432/6490/1270/files/solejiduzut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/60354234438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/41098118119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/jiwediduwereros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5054/8899/files/18428163665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5883/9203/files/4808777743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2885/6477/files/82922742567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/woburorofinuxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/78692168221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6201/8716/files/1986855294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8227/6250/files/pubosaru.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 8

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_off00006cd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD0 5504 bytes
SHA-256: f6410f1db2d8a460720a8447842e97cc59ec47096531a5cf3ed52bce2cd8636c
font_01_sfnt_off00007f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7C 10076 bytes
SHA-256: 9bb458e9be651afdacb93455ecc8ec7ae1e7787451b0e7e9c35e1fb7780fce10

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