Malicious PDF — malware analysis report

Static analysis result for SHA-256 c047910c5337612d…

MALICIOUS

PDF

40.4 KB Created: 2020-08-22 01:10:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aaaec3e5edf8b93f2419190aeca6af92 SHA-1: 67bc3d88bbaf3379d0a54c2b88f7f333ba87a7b7 SHA-256: c047910c5337612d530afa4622b5e8d7a48da65019bea5abdec995b296c266b9
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=guwahati+university+result+2019+marksheet'. The document body also contains this URL, suggesting a lure to trick users into believing they are accessing academic results. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious.

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=guwahati+university+result+2019+marksheet In PDF document text
    • http://tuvasi.harriscreekpta.com/uploads/1/3/1/4/131412290/5423395.pdfIn PDF document text
    • http://files.theroute92.com/uploads/1/3/0/8/130873973/zuguxizamuri.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/1/0451/7101/5829/files/kalimba_tablature_software_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/taxeruvoguzaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/games_spider_solitaire_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/tanunizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/savonigewef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3004/4062/files/vurigesoruki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9384/3358/files/84782679790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4264/1832/files/54743762401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/difference_between_concave_and_convex_lens.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_off00005f21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F21 5756 bytes
SHA-256: 394ec66564eca4ecdab751d8b42a268897c51aa131a2c5e745557d07a27e7c02
font_01_sfnt_off000072aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AA 10128 bytes
SHA-256: 19040bf3e965a514d1b35ac9fe60d3139d61d5a8348855ebf196b2b236386d64

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