Malicious PDF — malware analysis report

Static analysis result for SHA-256 950fab6faaa8f87b…

MALICIOUS

PDF

75.0 KB Created: 2021-04-05 07:15:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6daac07184671e1be1d2998f462fcb62 SHA-1: 595f64d625661b93ae257039c8b7da57df67f2c4 SHA-256: 950fab6faaa8f87b5c61a9b1bf872e006f4f8aefbc7f3165923170abfd0e7f0c
196 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are part of an SEO link farm designed to redirect users to potentially malicious websites. The primary redirector URL, 'https://mezovuduw.ru/wix?keyword=solstices+and+equinoxes+worksheet', is identified as an image lure for free download phishing. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a phishing or trojan-like behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/wix?keyword=solstices+and+equinoxes+worksheet PDF link annotation
    • https://s3.amazonaws.com/fedufiporara/the_pilgrims_progress_game_download.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/data_center_manager_jobs_in_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/72323453772.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/how_do_you_change_the_bulb_in_an_electric_fireplace.pdfIn PDF document text
    • http://sifisomatexow.sportsontheweb.net/apache_hadoop_architecture.pdfIn PDF document text
    • https://fodugivatixa.weebly.com/uploads/1/3/4/5/134501687/tusotisaviriripuza.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/gajitenipudas.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/graph_parallel_and_perpendicular_lines_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/tubanipuvopu.pdfIn PDF document text
    • https://waboralitenir.weebly.com/uploads/1/3/4/5/134504299/bifixuzozarafe.pdfIn PDF document text
    • https://vabijerokajesi.weebly.com/uploads/1/3/4/5/134595953/2150546.pdfIn PDF document text
    • https://ditoleruv.weebly.com/uploads/1/3/5/3/135345680/2123525.pdfIn PDF document text
    • http://memowelubi.mygamesonline.org/48316024849.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/bhanga_hrudaya_song_human_sagar.pdfIn PDF document text
    • http://tezibif.mygamesonline.org/holiday_math_puzzles_middle_school.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/google_maps_api_key_android_debug.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/troy_bilt_27_ton_log_splitter_specs.pdfIn PDF document text
    • https://taxubixud.weebly.com/uploads/1/3/4/7/134760406/jigoviwoligal.pdfIn PDF document text
    • http://buwubaled.mywebcommunity.org/23468226365.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd3da4a4-080c-4988-994b-a743b23b56a2/sojuti.pdfIn PDF document text
    • http://jonesojawu.myartsonline.com/cosmological_argument_for_the_existence_of_god.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0781300e-a599-4e62-9f55-b305bbaff2ea/maze_runner_the_scorch_trials_age_rating_uk.pdfIn PDF document text
    • http://jiwodiw.myartsonline.com/academic_writing_practice_for_ielts_free_download.pdfIn PDF document text
    • http://fumibilulad.atwebpages.com/lulonusajisojub.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_off0000e84f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84F 5480 bytes
SHA-256: d4746970aed29b6e8cd2170b331c7c744b52d188c54922c4d439485c079f97e7
font_01_sfnt_off0000faff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFF 10416 bytes
SHA-256: 3e75ef51ddeb27893509e39fd831e014ff13a5f681d5ae9462c623e5eb363277