Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea51416230588f3…

MALICIOUS

PDF

41.3 KB Created: 2020-08-07 08:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 140fe061ba34ce9e364a29e44d406c9e SHA-1: c23563df5c17361ea3a2122f859e32bae7f0f9f1 SHA-256: 7ea51416230588f33ca3a651bd7b4e65ef3b37396cb48eeaf31ec848b891ca61
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to malicious infrastructure. The primary redirector URL is 'https://ttraff.ru/pify?keyword=equivalent+expressions+worksheet+7th+grade+pdf', which is flagged as malicious. This indicates a phishing or scam attempt leveraging SEO tactics to distribute malicious content.

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=equivalent+expressions+worksheet+7th+grade+pdf In PDF document text
    • http://files.rubycopper.vn/uploads/1/3/1/6/131606155/6564262.pdfIn PDF document text
    • http://files.dinarchronicles.com/uploads/1/3/0/9/130969987/82eefe5c8f.pdfIn PDF document text
    • http://files.dizzycoach.com/uploads/1/3/0/8/130874129/redesoba-xurun.pdfIn PDF document text
    • http://files.kimashleyphotos.com/uploads/1/3/0/7/130740049/2426222.pdfIn PDF document text
    • http://kabid.storyscouts.org/uploads/1/3/2/8/132816066/puxagovogug-jajebisamu-xemimij-zefupajabi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2658/6519/files/23695799249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7471/4790/files/vewonomeborefagosubitos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/renasikurixirixuverapur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/fununavilumawapugamexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4613/2129/files/50652705807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/andhra_pradesh_history_in_telugu_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/pojidosufegabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/12879214377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6486/0575/files/26730444281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/97542976229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0372/3428/files/89385762022.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5504 5632 bytes
SHA-256: f889273a7bc280b251c910a8c9f7f43aee5331b8dc591d911c1661014bbda395
font_01_sfnt_off00006842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6842 9864 bytes
SHA-256: 14154bd7c9ad503f847b6e7cfedf3e4e0a4c5b553bc1ed97c02e5cfc25327636
font_02_sfnt_off00008a0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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