Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2ec8d9e832f3ef5…

MALICIOUS

PDF

44.0 KB Created: 2020-08-10 19:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6ada7bc1e23eb1c772ff2827ba71ff1 SHA-1: cbded125f6060b3616ade0d5647604f2b2c6553f SHA-256: c2ec8d9e832f3ef5fe007a1b99ef994a39872ba74c2ac0d6417aa3f838a73863
202 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link and a link farm, indicating an attempt to lead the user to malicious sites. The document body text and heuristics suggest a lure related to an 'Nbi online application form'. The primary malicious URL identified is https://ttraff.com/pify?keyword=nbi+online+application+form+pdf, which is likely used to redirect the user to a further malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=nbi+online+application+form+pdf In PDF document text
    • http://nanidisi.reallwell.com/uploads/1/3/1/3/131398091/wawobovunovulura.pdfIn PDF document text
    • http://files.bildwerkfrauenau.de/uploads/1/3/0/7/130776447/22c661cfb.pdfIn PDF document text
    • http://files.gilliantorckler.com/uploads/1/3/0/8/130874629/gomenevidi-kinepowa-xasokipa-xupuzateseroji.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/1/0429/8693/0329/files/fetulaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/25747428867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/16586065412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6561/4234/files/xenusasim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/cine_substitution_reaction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0443/6390/files/33534126356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8531/4715/files/gitignore_node_modules_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6363/6131/files/panama_city_surf_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9311/5548/files/va_form_21-_0779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0269/1743/files/desubibalipew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6221/3273/files/97707657527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1013/files/76680825884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9267/9582/files/fodenowew.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_off00006e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8A 5232 bytes
SHA-256: 4eb29ae6ddffd5d6ca362d6507a62459ff8ac8e3354e0590fd7836e4ce59c807
font_01_sfnt_off00008036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8036 10192 bytes
SHA-256: b10b55109e401496e7db1e85a8645989ad55daa3196bcd2cf2881634ea82d483

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