Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e43834d85b21647…

MALICIOUS

PDF

72.4 KB Created: 2021-03-18 04:44:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e51069280faceea714ab3a02fb1b7c0f SHA-1: 5fde02c5ba007d593fb108677921282a503c6e93 SHA-256: 5e43834d85b21647a1629a0f60b2c47eec6e69df92a89a80a588dd187c46863e
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file uses a lure related to a school bus schedule to trick users into clicking a malicious link. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' indicates this is likely a phishing attempt or a distribution point for further malware. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/wix?keyword=anne+arundel+county+school+bus+schedule+2019-20 PDF link annotation
    • https://cdn.sqhk.co/kososojog/WchigQv/93424291598.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/windows_server_2012_r2_standard_oem_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/pagusajaxurufujisuwikugag.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/25188853665.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/jekogogakeguvuje.pdfIn PDF document text
    • https://cdn.sqhk.co/domuduxuro/jdkiiWR/lanagetawalimosigub.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/dibovuborisiv.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/diminishing_value_depreciation_spreadsheet.pdfIn PDF document text
    • http://mnclassis.org/how_to_use_a_rainbow_vacuum_cleaner7yvmp.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/item_sheet_tft_9._19.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/rezulabukat.pdfIn PDF document text
    • https://cdn.sqhk.co/bidelefo/Wjiicia/rugesonusazo.pdfIn PDF document text
    • http://gagogepatajebe.medianewsonline.com/antibiotic_prophylaxis_and_recurrent_urinary_tract_infection_in_children.pdfIn PDF document text
    • http://topvideo.design/6182280203094ow8.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/jeielje/f1_car_races_gta.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/71197947199.pdfIn PDF document text
    • http://jenewazajasazu.getenjoyment.net/wawugamixalu.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/58757488983.pdfIn PDF document text
    • http://pagavopalubutu.scienceontheweb.net/amelie_soundtrack_sheet_music.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://uploads.strikinglycdn.com/files/bbecaf87-a05e-4bd4-a748-f26d5e23c149/que_debe_hacer_rrhh_en_una_empresa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4035550-e55d-4406-ad8f-5072cd12c161/prentice_hall_america_history_of_our_nation_answers.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF71 5608 bytes
SHA-256: 48b693ecc7dc69bc4a2c9c7c190f821076487240aaa34495aef527680d163c78
font_01_sfnt_off0000e279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE279 9828 bytes
SHA-256: 0e48a8ffa75506cbeee4784fd712fdca2d19096f6919c7d8ef2d935c41e999d3
font_02_sfnt_off0001042d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1042D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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