Malicious PDF — malware analysis report

Static analysis result for SHA-256 86609471c9516093…

MALICIOUS

PDF

49.5 KB Created: 2020-10-02 00:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b991cbd9588767a5d4e4a8558d35090 SHA-1: 4edabe0be45f3dcecdb1b927e98d9bd3741165cc SHA-256: 86609471c951609335d2aafd68191a79c2254ed4f34aa2c748f800b1cc8f2959
194 Risk Score

Malware Insights

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

This PDF file contains numerous links to SEO-poisoned content and malicious redirectors, designed to trick users into downloading further malware. The document body itself is heavily obfuscated but contains URLs that are likely part of a link farm or phishing campaign. The primary malicious URL identified is https://cctraff.ru/mozel?keyword=second+law+of+thermodynamics+in+terms+of+entropy+pdf, which redirects to other potentially harmful sites.

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://cctraff.ru/mozel?keyword=second+law+of+thermodynamics+in+terms+of+entropy+pdf In PDF document text
    • http://files.walkersvillechristkindlmarket.com/uploads/1/3/0/7/130739028/3332948.pdfIn PDF document text
    • http://fezov.carolineuahn.com/uploads/1/3/1/4/131452988/pobib_kovazerurib.pdfIn PDF document text
    • http://files.jenniferconstanceleeart.com/uploads/1/3/1/3/131379420/2457746.pdfIn PDF document text
    • http://files.tax-america.net/uploads/1/3/0/7/130776069/7453342.pdfIn PDF document text
    • http://files.3800southcicero.com/uploads/1/3/1/4/131437554/dutuvazunufetunuduzu.pdfIn PDF document text
    • http://mefogovu.virtu.rocks/uploads/1/3/1/3/131379373/d5bd539ea95c5.pdfIn PDF document text
    • http://files.bethlehembaptistchurchsaginaw.com/uploads/1/3/0/7/130776674/wexuganowad.pdfIn PDF document text
    • http://pufare.wall-in.com/uploads/1/3/2/6/132696067/guwidotajagipigadi.pdfIn PDF document text
    • http://wupilapa.mad4mosaic.com/uploads/1/3/1/4/131407535/ruluvesevumunumu.pdfIn PDF document text
    • http://mivev.hopedia-mendministries.com/uploads/1/3/1/6/131636655/kutuzagewuvuror.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/1/0432/2865/9869/files/postoperative_nausea_vomiting_icd_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8568/7703/files/square_manual_entry_limit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/questions_for_ada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7396/6758/files/novena_a_san_judas_tadeo_casos_dificiles.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0A 5480 bytes
SHA-256: f22fe2d6b91b280ff58cff8324542bd69871ea2315b1f40da649426ea136d911
font_01_sfnt_off00007e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8A 13952 bytes
SHA-256: ba4fe5e27c3e75a78267cc874363bcb21fb52240b7a5629fa17cc59e4dc48647
font_02_sfnt_off0000aa96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA96 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378