Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3ac6ab965bc5af0…

MALICIOUS

PDF

35.0 KB Created: 2020-08-11 13:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e11af679dfe08c8a9b385ccb40fbec30 SHA-1: da551285c4e79d28dc0cbb723a43f53624bde996 SHA-256: b3ac6ab965bc5af0ae349fbe49df547d3d7083e0bf486bf86c2f71bd4ff3a510
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=the+trial+and+death+of+socrates+pdf+download`. This URL is likely part of a link farm designed to attract traffic. The document body also contains this URL and numerous other links to PDF files hosted on various domains, suggesting a SEO poisoning or link farm attack. The ML classifier also 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=the+trial+and+death+of+socrates+pdf+download In PDF document text
    • http://files.puddletownknittersguild.com/uploads/1/3/2/3/132303081/kewilenesagir.pdfIn PDF document text
    • http://files.myprotectionguide.com/uploads/1/3/1/4/131438456/a91759f79.pdfIn PDF document text
    • http://peruwosad.loveforellie.com/uploads/1/3/1/4/131483281/xakenowi.pdfIn PDF document text
    • http://files.irish-psychic.net/uploads/1/3/2/8/132814593/peliwapo.pdfIn PDF document text
    • http://files.schsprojectgraduation.com/uploads/1/3/0/8/130874329/mafevugegokum-mefibi-deniz.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/1/0437/2099/9064/files/gemstones_of_the_world_walter_schumann.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9523/6513/files/8230750144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0242/0644/files/25367347659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5287/6455/files/74520558137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/naxurisoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1650/2939/files/top_kodi_addons_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7121/7565/files/129567043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/54653975990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2526/7877/files/budaya_organisasi_google.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/jinibogugi.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_off00004aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AAD 5284 bytes
SHA-256: ad0970f57d7863f51c0681003473711b630f4ff051e75bf4ea6768dface94d2e
font_01_sfnt_off00005cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAE 10080 bytes
SHA-256: e17e63462799f60e462536e035a2c1ba14acbc100b33d39176948d1e67ee947e

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