Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aaba9b9dd7b7477…

MALICIOUS

PDF

77.5 KB Created: 2021-03-12 05:54:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d98962aff505df91bc33db76167cae73 SHA-1: 164ee644086a1e1f4f3882b4144811eb54e7901a SHA-256: 2aaba9b9dd7b7477afcd6526f942d80d0185b3d7c6cda43b427587bb5afb1fa4
136 Risk Score

Malware Insights

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

The PDF file contains a high-severity heuristic indicating an image lure linking to an SEO redirector, identified as a free-download phishing attempt. The primary URL associated with this redirect is https://leonvi.ru/award?keyword=paradoxical+aciduria+pdf. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://leonvi.ru/award?keyword=paradoxical+aciduria+pdf PDF link annotation
    • http://jepisafidezegun.scienceontheweb.net/bacterias_anaerobias_facultativas.pdfIn PDF document text
    • http://dusamoka.mywebcommunity.org/what_are_the_best_vacuum_sealer_bags.pdfIn PDF document text
    • http://punejew.mygamesonline.org/1001_spells_cassandra_eason_free_download.pdfIn PDF document text
    • http://petrol-v-pol-price.site/wofejbf29r.pdfIn PDF document text
    • https://bukudemedu.weebly.com/uploads/1/3/1/4/131483547/8227809.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450045/normal_6039f4a4e3a34.pdfIn PDF document text
    • https://wikefazopikevi.weebly.com/uploads/1/3/4/7/134715570/115c1879.pdfIn PDF document text
    • http://cheapkeys.site/difference_between_should_be_and_must_be21zdm.pdfIn PDF document text
    • http://xotizel.iblogger.org/51942227326.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447097/normal_6041a9584c099.pdfIn PDF document text
    • http://cocobuka3.xyz/384899923181du26.pdfIn PDF document text
    • https://wofovado.weebly.com/uploads/1/3/1/8/131871653/zixituxax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423696/normal_6001ee6941d59.pdfIn PDF document text
    • https://pelabinal.weebly.com/uploads/1/3/1/3/131379552/129863.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458615/normal_5fc7a2648cb3e.pdfIn PDF document text
    • http://rentline.pro/the_other_wise_man_henry_van_dyke_textz2km0.pdfIn PDF document text
    • https://jakakatis.weebly.com/uploads/1/3/5/3/135323185/kujaseki-jonemidibuluton-bekuluxebanuvol.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/buponuwebi/i_robot_full_movie_in_hindi_dubbed_hd_2004_free_download_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/blender_2._8_manual.pdfIn PDF document text
    • http://nofazixufewow.rf.gd/dovuliselomofa.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/membuat_cv_di.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/zuxeti.pdfIn PDF document text
    • http://fasilew.epizy.com/roxup.pdfIn PDF document text
    • http://voderekop.rf.gd/new_tarot_deck_interview_spread.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/homeostasis_worksheet_answers_key.pdfIn PDF document text
    • http://zedigopafuwu.rf.gd/line_6_spider_4_15w_price.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_off0000f40a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40A 5040 bytes
SHA-256: 8612f73bbd3aec25af9a0fdd0a2463362e0c95cd9f1f0e7cc004a436096431e0
font_01_sfnt_off00010544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10544 10264 bytes
SHA-256: 4c12982bf85b67edb8520d3e4d38c739b3fadba72b19ed39cff66b671358248e