Malicious PDF — malware analysis report

Static analysis result for SHA-256 4066f55eb612d2e4…

MALICIOUS

PDF

80.0 KB Created: 2021-04-03 16:55:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e03bce509cc2a71669d1dcbe7f390243 SHA-1: 745a19038e5c50f4509ee57492cec6250131ee81 SHA-256: 4066f55eb612d2e43a96c8d73ef4c207ae1cdc4feeaa760d51749f7d49ccc095
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an SEO redirector to disguise a free download. The primary malicious URL identified is https://nipisod.ru/award?keyword=types+of+bandages+and+dressings+pdf, which is likely used to lead victims to a phishing page. No scripts were extracted, but the overall structure and heuristics point to a phishing attack delivered as a document attachment.

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://nipisod.ru/award?keyword=types+of+bandages+and+dressings+pdf PDF link annotation
    • https://s3.amazonaws.com/gapivegek/how_to_set_the_draw_weight_on_a_compound_bow.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/a1000_yaskawa_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/xitodumuxosutagunivunikez.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://naturalgood.space/719186430e6am3.pdfIn PDF document text
    • http://drive4mclanemilwaukee.com/xeduzuzamobubivosuzilp4pnh.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/brochevarevarura_full_movie_hd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367310/normal_5fff23ab627be.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/onkyo_tx-sr705_manual.pdfIn PDF document text
    • http://presentinsta.site/halloween_fake_nails_amazon2mstv.pdfIn PDF document text
    • http://ekzo-fruit.ru/2013_dodge_charger_rt_plus_specstelsq.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/86311607524.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388842/normal_5fe259f665065.pdfIn PDF document text
    • http://comp-arenda.site/tefazedli6h5.pdfIn PDF document text
    • http://albl.ru/kuzalolu2zdc6.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/bethel_music_starlight_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/valunaputilagazasosomizok.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/cisco_linksys_router_wrt120n_default_password.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/70934932473.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 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_off0000fa8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8D 5368 bytes
SHA-256: 2bc26a0068e04edaf9417226377c2f43c649e3128f461a048dc37f9dd32cc547
font_01_sfnt_off00010ce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE1 10740 bytes
SHA-256: d79c5d716e06461c499341e4e8a5761a4e2ce87ae9f621ae0232a04791b21681

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