Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b8b2307f215715b…

MALICIOUS

PDF

35.5 KB Created: 2020-08-22 04:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05a2d58e8f783ce5982e4f6ae39b2678 SHA-1: f1d3ffafdb74d70e5d2841c9df247e426d7aa1c9 SHA-256: 2b8b2307f215715b56af551bd5f16603d2f47e3d21f4567215fe1e661b1a7972
162 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links pointing to other PDF files hosted on Shopify and other domains, indicative of a link farm. One of the primary links redirects to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The presence of a link farm suggests an attempt to manipulate search engine rankings or distribute malicious payloads indirectly.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.cc/pify?keyword=bandook+song++djyoungster In PDF document text
    • http://files.accentedglory.com/uploads/1/3/1/6/131636655/nujojubo-tesekirimu-zubimemexedas.pdfIn PDF document text
    • http://files.mycollectivedesigns.com/uploads/1/3/1/8/131871466/rovasavoda.pdfIn PDF document text
    • http://files.deltonamiddleffa.com/uploads/1/3/1/0/131070612/842167.pdfIn PDF document text
    • http://muwaf.pdkmusic.com/uploads/1/3/0/7/130775403/8bcf7af43cd4e8.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/1/0434/2182/7222/files/python_script_for_ssh_connection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4363/3822/files/ancient_egypt_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/38154760124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9471/9131/files/56785351744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/80656550675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/pdf_to_word_converter_offline_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/53655820956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/80048038815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/80621279381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/8229/5969/files/entrepreneurship_development_noun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/kekalaxat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7228/2008/files/98016454997.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_off00004af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AF0 5252 bytes
SHA-256: d3bfd0922463959910fab57d5a839229a6540bf8070257130fd26c4f1eb0cfb4
font_01_sfnt_off00005ce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE8 10588 bytes
SHA-256: 230d6e70064d8a45b8e5f94d3d207ae89a2f162611e15835e024073b021211be

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