Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5bd705ff149d25d…

MALICIOUS

PDF

87.9 KB Created: 2020-08-07 05:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95fa5354bc0240e31aac23975739c1e0 SHA-1: a3203f1cd702d14f44ae4b52aaf590d8f21454f0 SHA-256: b5bd705ff149d25d6403bd3a3aa5ac57a7ee8cd1338387dcfdee2a82cd2d9c88
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains numerous links, many of which point to domains associated with link farms and redirectors. The primary malicious URL identified is https://ttraff.ru/pify?keyword=antioxidant+activity+of+silver+nanoparticles+pdf, which is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains references to the PDF title and authoring application, suggesting a lure for users searching for specific documents.

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=antioxidant+activity+of+silver+nanoparticles+pdf In PDF document text
    • http://files.idleminded.com/uploads/1/3/0/9/130969934/pizajezeraxit_xuranelufasagi_gofawob_vejepi.pdfIn PDF document text
    • http://files.shopkashkoutureko.com/uploads/1/3/0/7/130740127/d294bc.pdfIn PDF document text
    • http://files.okomomodesign.com/uploads/1/3/2/6/132680986/jurapanoleme_tibusa_tovurerapa.pdfIn PDF document text
    • http://files.rayvik.com/uploads/1/3/0/8/130814065/fee140733cab3a.pdfIn PDF document text
    • http://files.citizensfor1.com/uploads/1/3/1/8/131857305/ef8b886c60.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/1/0429/2929/1427/files/bojezuberesudofumob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1089/1676/files/43994968192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9547/4855/files/giwifirenazedosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2089/1798/files/36624988885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0062/7363/files/ratesesitibagoviratuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8113/0394/files/86740285176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7589/5450/files/lunewolabadezej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/antrenmanlarla_geometri_cevaplar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/70464549522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6563/7019/files/griffiths_quantum_mechanics_2nd_edition_solutions.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
🗂 Part of campaign: johannaparkhurst.com 5 samples

Related samples 3

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_off000115b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115B3 5368 bytes
SHA-256: 1f76a5fd289158fca8a004b6fea9dff5a01ed0686a4b32d6e8c0c7d86e5ceddb
font_01_sfnt_off00012817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12817 13236 bytes
SHA-256: ca4098a29e7039f07561979335b2ad385eece293037c0b25e788f008c786be2e

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