Malicious PDF — malware analysis report

Static analysis result for SHA-256 1234db3210fd7626…

MALICIOUS

PDF

74.3 KB Created: 2021-02-28 10:49:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 235697bbbede0a4a3bca384ec7205d49 SHA-1: c7957e40d0d71e70ecda679fb10247ab95646e9c SHA-256: 1234db3210fd762669f080afd4a8f35203878c117615c567d876140e98615250
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains heuristics indicating it is a phishing lure, redirecting users to a malicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=poster+analysis+worksheet+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367278/normal_5ff5955842862.pdfIn PDF document text
    • http://wazepewazivulil.mywebcommunity.org/33878924365.pdfIn PDF document text
    • https://cdn.sqhk.co/fezemepusap/8iighib/31179374918.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502248/normal_603a695320578.pdfIn PDF document text
    • https://cdn.sqhk.co/wanoposuj/hebhaZL/sukure.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/vufuvesubirumap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421612/normal_601e26bd71385.pdfIn PDF document text
    • https://cdn.sqhk.co/guzoladip/hgXjiib/zorosofujunal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384144/normal_5ffd258137b82.pdfIn PDF document text
    • https://cdn.sqhk.co/puxolika/ijje7eg/somepimi.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/table_d_statistics.pdfIn PDF document text
    • https://cdn.sqhk.co/sunaxidida/J2gcFTd/lixoxerowonopevo.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/libeganot/puzaxibav.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/gy-_521_mpu-_6050_datasheet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e79c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79C 5032 bytes
SHA-256: 6bcc1a22bca186f646c9df464a09975d0c99351270501d376bc3c8c77262c8a7
font_01_sfnt_off0000f8c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C8 10276 bytes
SHA-256: 1e42b5af0d20ea393c28743cf8dca7f5f35790367233dad3b52c5b21bba993be

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