Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20828cf1912ff6e…

MALICIOUS

PDF

44.1 KB Created: 2020-08-10 09:33:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d0b1203bd217b26011faa35e0b20952 SHA-1: ef764dd253c4da36647e94dc6ed44f360a6cc887 SHA-256: c20828cf1912ff6e908a3ffb31792def083ba10c9b02125dccf5991db7281f79
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors, indicating a phishing or malicious redirection attempt. The document body, though partially corrupted, includes a URL that is also present in the heuristics, suggesting it's a primary lure. The presence of numerous external PDF links, including one to a redirector, strongly suggests a malicious intent to drive traffic to potentially harmful sites.

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.ru/pify?keyword=penanganan+orang+pingsan+pdf In PDF document text
    • http://files.feedthewobbegong.com/uploads/1/3/0/7/130740062/xelikagevowud-sazewurixavigi-mojufovo-leduledaza.pdfIn PDF document text
    • http://files.grandmaceilshouse.com/uploads/1/3/1/4/131408529/92347f03614c5.pdfIn PDF document text
    • http://files.naunavs.org/uploads/1/3/1/6/131637553/cbef182d76258b.pdfIn PDF document text
    • http://penekitup.newenglandinjectors.com/uploads/1/3/0/7/130739553/zanelefurin.pdfIn PDF document text
    • http://files.artizaninternational.com/uploads/1/3/0/7/130739593/nipekoke.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/1/0434/2353/1175/files/assembler_des_documents_en_un_seul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/96445241642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/7054163456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1569/1678/files/18843296274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8978/8070/files/adenoiditis_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/soginenumimajixuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/series_7_kaplan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/jvc_everio_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9742/4026/files/dogolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0769/7305/files/podinabofotaluram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/19266281352.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_off00006f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F78 5176 bytes
SHA-256: 4e6a386cd92784134fe4f6bacd43ca5247805800add5c844345982081b35fdb2
font_01_sfnt_off00008124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8124 10096 bytes
SHA-256: 79896c452907c008f3c5f2c8ddc8c2ce99d98a32f4bbaf61682e40be6324b006

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