Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f0867f9286f4b9…

MALICIOUS

PDF

38.5 KB Created: 2020-08-05 03:03:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df2f2de0c624ffcbdf8cfb8b58c1b7f7 SHA-1: d4a05f0c00db24566efd441ec9171cc76fe92ecc SHA-256: 52f0867f9286f4b913265ce68eda0e903823b7ad32e3fe025fb6dfad5e4b176b
194 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which in turn points to a large number of SEO-optimized PDF links. The primary malicious link identified is https://ttraff.ru/pify?keyword=free+download+spoken+english+book+in+gujarati+pdf. This suggests a phishing or malicious content distribution scheme, likely aiming to drive traffic to potentially harmful sites or distribute further malware. The ML classifier strongly supports the malicious nature of this PDF.

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=free+download+spoken+english+book+in+gujarati+pdf In PDF document text
    • http://sudivuz.cavysa.org/uploads/1/3/2/7/132710780/a8a9b7e053461.pdfIn PDF document text
    • http://files.readyforkevi.com/uploads/1/3/1/4/131453395/notasixel.pdfIn PDF document text
    • http://rodofem.brewerstreetfarmhouse-weddings.co.uk/uploads/1/3/0/7/130776485/43ce2cc.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/1/0439/4598/4158/files/tratamiento_nutricional_para_el_alzheimer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3461/4688/files/podagidokozelemew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9327/0429/files/paxojixoledusenewuvebepat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/90582080660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/nizaxofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2121/9493/files/96318381812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4417/5013/files/zijijumulekiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/cadenas_de_abastecimiento_dinmicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/mufobazemuzatiluvinoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/potovuzepalejajuguzurot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96672573922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/33733838330.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 1

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_off000057d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D9 5628 bytes
SHA-256: 6ffe4176edc93d4943ccb181f31562d7b0a1fbcecf20bfb92c2662792681004c
font_01_sfnt_off00006b0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0E 10008 bytes
SHA-256: 3181e57a2ccc2b700c26fc6a0189a6e1b023fd916cac002483a7f7c4e3726bf1

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