Malicious PDF — malware analysis report

Static analysis result for SHA-256 8698ad5157848a88…

MALICIOUS

PDF

43.6 KB Created: 2020-08-20 21:46:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b87e547365be95fd2ca2f39eb763ec32 SHA-1: 00dc6fcf1ce6011eac3ac0dfde65691c1b6b7558 SHA-256: 8698ad5157848a887938ebac6ccd397f8941f5d6192fffec7fba6c1f9f41edf0
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector infrastructure associated with malicious activity. The document body and embedded links suggest a lure to download further content, likely malicious. The presence of embedded URLs and the ML classifier strongly indicate malicious intent.

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.com/pify?keyword=grade+4+math+word+problem+worksheets+pdf In PDF document text
    • http://files.jenniferrollin.com/uploads/1/3/1/6/131637635/suron-zonepo-gudobigegepekup.pdfIn PDF document text
    • http://wukopiko.spiritual-research-network.com/uploads/1/3/0/8/130874488/nudekefenosumegaponu.pdfIn PDF document text
    • http://files.treetogrow.com/uploads/1/3/1/6/131636676/luralizinikabam.pdfIn PDF document text
    • http://files.sbwga.com/uploads/1/3/0/7/130740069/zemevamadevufex.pdfIn PDF document text
    • http://disanidis.chapel-associates.co.uk/uploads/1/3/1/3/131383544/637446.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/1/0437/3400/7973/files/37854456065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/lapevin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2630/9543/files/lagu_barisan_para_mantan_reggae.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/goxubeteb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/66198681626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2548/9320/files/12577631121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/nuvak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2940/4567/files/fusujiraxedavup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3687/4651/files/pozizufidopowebug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0504/8994/files/water_fountain_alec_benjamin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9365/5716/files/binomial_heap_in_data_structure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3837/5074/files/tejupen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.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: chapel-associates.co.uk 4 samples

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_off00006a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A91 5696 bytes
SHA-256: b0abb720e66eb7655b267e98217bc7c317deacb1906dd78a8979a0b4bf9f0224
font_01_sfnt_off00007dea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEA 10380 bytes
SHA-256: 48380ee3499b54432334b356d1d3c7d5a8d5c2687ffad4f02d722c7bec7702ce

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