Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a114b78061c5c00…

MALICIOUS

PDF

67.3 KB Created: 2021-02-28 05:33:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 4b55c6224da86b64961402f5fc92b9f9 SHA-1: 3db56be1a0d173535ff9e45c6f7c16ac89bfe9f9 SHA-256: 5a114b78061c5c00ffa2e48720bb971127357bc14e01a4071eeb4f26b490e725
136 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains an external URI and an image lure that redirects to a suspicious URL, likely to deceive users into downloading further malicious content or providing sensitive information. No scripts were extracted, but the overall structure and URL suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/award?keyword=youtube+how+to+sew+a+simple+face+mask+tutorial PDF link annotation
    • https://cdn.sqhk.co/sebutarukaw/hbzge5l/new_english_songs_list_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/rarirawibowo/f7Hjbij/47819753697.pdfIn PDF document text
    • http://joweponula.mywebcommunity.org/casio_fx_115es_plus_display_decimal.pdfIn PDF document text
    • http://jebebixazonutug.mypressonline.com/nelusafelolekutaxojene.pdfIn PDF document text
    • http://sitizinudex.getenjoyment.net/nabasaribugeganaxekineni.pdfIn PDF document text
    • http://minesaxofunawi.getenjoyment.net/jitexafemuzajagizotekomu.pdfIn PDF document text
    • https://cdn.sqhk.co/sobutexe/ggbhfFY/drift_mania_street_outlaws_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/daboxazile/ghiaifZ/recharge_it_albany.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/ejihjda/13961637947.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/kovilowab/tiloxoganojojazetef.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/android_emulator_localhost.pdfIn PDF document text
    • http://bifiwapaz.onlinewebshop.net/how_to_program_a_jumbo_universal_remote_without_code_search_button.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/xakidiluxumutezomixig.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/39652091200.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/83848065260.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/anatomy_of_human_body.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/50254123200.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/50785419681.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/taxolunoxopazobinesar.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_off0000caec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAEC 5512 bytes
SHA-256: 75bbe0978d32151aa134402aa2c9e1ead2810d368faf89652380eae65ada7e9d
font_01_sfnt_off0000dd94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD94 10044 bytes
SHA-256: 4bfda4206dfacd0f159f22ad2424efca32b9908b7c7e4a58643613f2ec5c1acb

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