Malicious PDF — malware analysis report

Static analysis result for SHA-256 574964ec84892387…

MALICIOUS

PDF

81.9 KB Created: 2020-08-15 01:22:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c8068af4d8c6548aa17620ab82de59c SHA-1: 4f1707d19812d62c7b0bed38c955b0bcb8b2a2de SHA-256: 574964ec84892387bc353ae56a4d8091a606cf259f0b9455f884a23b50666ea2
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 external sites, indicating a link farm. One of the primary URLs, 'https://ttraff.ru/wb?keyword=bridge%20to%20terabithia%202%20pdf', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes several URLs, reinforcing the link farm behavior.

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/wb?keyword=bridge%20to%20terabithia%202%20pdf In PDF document text
    • http://files.localrootsjuiceco.com/uploads/1/3/1/8/131856446/doxaxalisak_xalimakumopeli_kawufulovaru_subixorezi.pdfIn PDF document text
    • http://files.mr-stevens.com/uploads/1/3/0/7/130776864/zoxakaso.pdfIn PDF document text
    • http://files.edithbp.com/uploads/1/3/1/4/131482941/xidosofolinigisetot.pdfIn PDF document text
    • http://files.centersquaremotors.com/uploads/1/3/1/4/131406202/72cd482be9f359.pdfIn PDF document text
    • http://files.clearviewpaymentsolutions.ca/uploads/1/3/0/7/130775357/a260587d0.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/1/0447/9103/8118/files/sonda_vesical_demora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/beatles_complete_chord_songbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5018/8443/files/98849406116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/nudesujiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0113/4747/files/tips_for_answering_competency_based_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5455/4533/files/56426282281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/misakuzidozugunud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0723/7531/files/3224324792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/gubotadagipasoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/60459532607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6990/6844/files/48603278727.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_off00010239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10239 5412 bytes
SHA-256: 27a8e16c40631fbc8660043f85b2eff31e49d066f3ea4a3360d726bed4cccb88
font_01_sfnt_off0001149d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1149D 11576 bytes
SHA-256: 6030c26ff0c02d338305d085be37cbfed4f735b3342aed24a9894ce1228251fc

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