Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be673b7c68f8a74…

MALICIOUS

PDF

39.8 KB Created: 2020-08-21 16:24:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bbd28cd2693dfceb6009d864f6206383 SHA-1: 659cf9fccb302c487a8013ab9b912991f14d6fe4 SHA-256: 0be673b7c68f8a743b44e053052526be42ec3b3d503b9f7b95324bf052a94a76
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, many of which point to a redirector URL associated with malicious activity. The heuristic firings indicate this PDF is part of a link farm designed to lure users, likely for phishing or SEO manipulation. The ML classifier strongly supports the malicious nature of this document.

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/pify?keyword=uniforme+corinthians+2008 In PDF document text
    • http://lunudonuj.vintageaffiliated.com/uploads/1/3/0/7/130739783/zadaso-nujanuresamaxe.pdfIn PDF document text
    • http://zoxeseje.irondalelax.com/uploads/1/3/0/9/130969656/duwitup-polunet-detuvola.pdfIn PDF document text
    • http://files.petlemur.com/uploads/1/3/1/4/131406797/137cb532.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/1/0430/2897/1681/files/8271623493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/30758679910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/5330/3196/files/tufaximede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7333/4424/files/number_theory_notes_for_bsc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9886/4804/files/wewebagotibobomiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7332/0600/files/vamebifipazosozixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5298/8566/files/62126961729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2901/2381/files/everytime_we_touch_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0873/6927/files/99672833463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/5248/3996/files/container_pendency_report_at_mundra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8257/8088/files/banana_bread_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2344/0792/files/dosejewipulipumamofobin.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 3

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_off00005d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2A 5548 bytes
SHA-256: 5668f8f2dd270ae4c3f52a4fb81afaf80f11a4d1749e68632b6d2749aa39da53
font_01_sfnt_off00006fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD3 10116 bytes
SHA-256: 7ee298d9029838403117d3d61fb9b81b64d39a85766fa4719b5657bda1aaa122

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