Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b5a774de46b997…

MALICIOUS

PDF

41.7 KB Created: 2020-08-06 13:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 682d292a10a610e2e006464f379d2bce SHA-1: b4af8e01ed9dd1ed75a21a48016fe336e88eaf0f SHA-256: 65b5a774de46b9978fe162a9d313ace9ca3d4f23e152132ceec84babe77126f6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though partially garbled, includes a URL that matches the redirector, suggesting a lure for users to download further content or be redirected to malicious sites. The ML classifier strongly indicates malicious intent.

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.cc/pify?keyword=orthographic+drawing+exercises+with+answers+pdf In PDF document text
    • http://files.chadgmalcolm.com/uploads/1/3/1/4/131454345/sotusedagogive_difesu_goriditaritogov_dujax.pdfIn PDF document text
    • http://files.sinclairseniorliving.com/uploads/1/3/2/6/132682758/kadoxumowin.pdfIn PDF document text
    • http://nesafib.leeannhorrillcounselling.com/uploads/1/3/2/7/132712207/pujaluworomupe.pdfIn PDF document text
    • http://files.francheskafifield.com/uploads/1/3/1/4/131483234/2344049a47.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/1/0428/0962/2691/files/38577057314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/tipos_de_perfiles_de_aluminio_para_puertas_y_ventanas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/convert_to_word_document_that_can_be_edited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/54556023573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3064/1829/files/ralofujidorej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/muridamuwafupanojatazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7795/8822/files/mupekolezefaxoxovaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6934/9794/files/87012990372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/95914016320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/degelewupogusajuxuteg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9176/8984/files/mudanojojagevesajijes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4249/2836/files/autocad_file_to_online_converter.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 1

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_off00006248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6248 5572 bytes
SHA-256: 66f410e70560c546240203992d43a7b24568c00189ae597f44b20fd5300a4a7b
font_01_sfnt_off0000754c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754C 10780 bytes
SHA-256: 461e28cdb23de20fafb8f40d161cab9c47a1b18b91b49fdb091199a11e07596d

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