Malicious PDF — malware analysis report

Static analysis result for SHA-256 a82632cd1dc29fe6…

MALICIOUS

PDF

72.3 KB Created: 2021-02-21 23:14:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 5f74557129426ac4ef34f56cb9531670 SHA-1: a4cae79afdaa9f97e28d19b8ae09682e971d5a52 SHA-256: a82632cd1dc29fe680ae2853086d946471caf05446b8568410586c41cf433825
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. The heuristic 'PDF_SEO_LINK_FARM' reveals the document's intent to host numerous external PDF links, likely serving as a distribution point for malware. The embedded URL 'https://seumenha.ru/wix?keyword=energy+work+power+worksheet+answers' and other similar URLs found in the heuristics and URL list are part of this malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/wix?keyword=energy+work+power+worksheet+answers PDF link annotation
    • http://100naturals.fun/89615792339oycvj.pdfIn PDF document text
    • http://soldonlittleton.com/679830946596xy0c.pdfIn PDF document text
    • https://nedotumawu.weebly.com/uploads/1/3/4/6/134626041/xekukusud.pdfIn PDF document text
    • http://philonio.online/long_and_short_e_worksheets62pj4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369519/normal_5ff109a3be1fd.pdfIn PDF document text
    • https://nufewaxitobazat.weebly.com/uploads/1/3/4/7/134748461/5287746.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412780/normal_60324cdb7ec1f.pdfIn PDF document text
    • http://gallery-shop.site/398595538267x0gz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/2011_chevy_malibu_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/dalobuwipofedose.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/bizerba_gsp_hd33_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/15070114823.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/car_bill_of_sale_template_word_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/30122259769.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/mutopo.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 5

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_off0000dd5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5D 5264 bytes
SHA-256: c7c8027d88d87dcf99482923434a35506042a88b11c950c3dc8f4540d58baab5
font_01_sfnt_off0000ef5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF5D 10852 bytes
SHA-256: 7e2f5ca7a1df8b1bad8aef88194082dc931d208233e396b8daad12fdc101942a

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