Malicious PDF — malware analysis report

Static analysis result for SHA-256 3692e66216d9e21e…

MALICIOUS

PDF

41.7 KB Created: 2020-08-06 07:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9450de088bd882e9de387023e70e0dd SHA-1: 3be1c13a2901d1c55370fe05256af143a5b79215 SHA-256: 3692e66216d9e21e2ad5ce750c50bfacf93d49088d6839c962ec508986db5395
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Acquisition definition pdf' and the malicious URL. The ML classifier strongly flagged this PDF as malicious, suggesting it's designed to lure users to a harmful site.

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=acquisition+definition+pdf In PDF document text
    • http://files.normanchildrenchorus.org/uploads/1/3/2/6/132681665/setufedumoparotojow.pdfIn PDF document text
    • http://files.rina-bansuri.com/uploads/1/3/1/4/131406659/kitufaxaga_sidisetiv_vexikitafot.pdfIn PDF document text
    • http://files.forwardpathcoaching.com/uploads/1/3/0/7/130739835/konunagup_pumuled_dezovew.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/1/0432/9170/5500/files/21715406646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/fedexiwofutadolovokepelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/poniweviwolifasorox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8372/5990/files/it_took_me_by_surprise_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9334/3912/files/52902788661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/37811103255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/economist_cover_letter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5011/3943/files/atripla_efectos_secundarios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0004/4440/files/bank_po_exam_material_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/tamolidajetewased.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1155/4980/files/faniwulopozolix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3830/2627/files/44739312428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6706/4998/files/95460060842.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 6

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_off00006656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6656 4928 bytes
SHA-256: ba8a07a87e9807d0737b6f9ef291af0777a59b0ef77456af071d8407c731382d
font_01_sfnt_off00007739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7739 10292 bytes
SHA-256: 16f318fa2c3044ff3adb609a1941470e5d821ddb08692e4e1f43ac62186fac12

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