Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6fd4c9fe071e484…

MALICIOUS

PDF

40.5 KB Created: 2020-08-24 22:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64fc7cebc6194de25f82cb7fed804016 SHA-1: 9759070e84167de476dbd82fb909ccb92b532e7b SHA-256: e6fd4c9fe071e484ca4cc4c1004af5a756274b167644fa901f6ed174e34b19c9
194 Risk Score

Malware Insights

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

The PDF file was identified as a malicious redirector and a link farm due to the presence of numerous embedded URLs. The primary malicious URL, https://ttraff.ru/pify?keyword=efficiency+of+transformer+lab+report, is likely used to redirect users to further malicious content. The document body itself contains garbled text and embedded URLs, reinforcing the link farm heuristic.

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=efficiency+of+transformer+lab+report In PDF document text
    • http://files.ngatipaoaiwi.co.nz/uploads/1/3/1/3/131380467/tedolajonur.pdfIn PDF document text
    • http://files.collectiblechristmasornaments.ca/uploads/1/3/1/8/131871424/2717106.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/1/0435/4097/1674/files/9910858170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/3037566379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5970/8058/files/67247856129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0913/6024/files/thriller_album_michael_jackson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/doxosomet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/ginadidinolijisubonuvovaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/agenda_educadora_diferencial_2019_para_imprimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6277/1358/files/dalutaputukunari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9575/2858/files/vilon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/files/97737415541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8907/5102/files/kabbalah_portugues.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
🗂 Part of campaign: ngatipaoaiwi.co.nz 3 samples

Related samples 2

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_off0000603a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603A 5360 bytes
SHA-256: bec4f7a3ee4af9fbeeb5ee7a270386941210f5f1e781104215fab4fea74f6275
font_01_sfnt_off00007260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7260 10116 bytes
SHA-256: 4cdede165a36006642d29d85b578ccd15891db008ad056ca16509875c001dabb

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