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)
MD5: 6daac07184671e1be1d2998f462fcb62 SHA-1: 595f64d625661b93ae257039c8b7da57df67f2c4 SHA-256: 950fab6faaa8f87b5c61a9b1bf872e006f4f8aefbc7f3165923170abfd0e7f0c
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a suspicious domain. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. The heuristic 'PDF_SEO_LINK_FARM' suggests the document is designed to host a large number of links, likely to distribute malware or facilitate phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
    • http://komaxinatobofe.medianewsonline.com/data_center_manager_jobs_in_canada.pdf
    • http://sifisomatexow.sportsontheweb.net/apache_hadoop_architecture.pdf
    • https://fodugivatixa.weebly.com/uploads/1/3/4/5/134501687/tusotisaviriripuza.pdf
    • https://waboralitenir.weebly.com/uploads/1/3/4/5/134504299/bifixuzozarafe.pdf
    • https://vabijerokajesi.weebly.com/uploads/1/3/4/5/134595953/2150546.pdf
    • https://ditoleruv.weebly.com/uploads/1/3/5/3/135345680/2123525.pdf
    • http://memowelubi.mygamesonline.org/48316024849.pdf
    • http://tezibif.mygamesonline.org/holiday_math_puzzles_middle_school.pdf
    • https://taxubixud.weebly.com/uploads/1/3/4/7/134760406/jigoviwoligal.pdf
    • http://buwubaled.mywebcommunity.org/23468226365.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fedufiporara/the_pilgrims_progress_game_download.pdf
    • https://s3.amazonaws.com/divelatoxa/72323453772.pdf
    • https://s3.amazonaws.com/viboxikuz/how_do_you_change_the_bulb_in_an_electric_fireplace.pdf
    • https://uploads.strikinglycdn.com/files/bd3da4a4-080c-4988-994b-a743b23b56a2/sojuti.pdf
    • https://s3.amazonaws.com/pokorevalaxex/gajitenipudas.pdf
    • https://s3.amazonaws.com/dewazewokib/graph_parallel_and_perpendicular_lines_worksheet.pdf
    • http://jonesojawu.myartsonline.com/cosmological_argument_for_the_existence_of_god.pdf
    • https://s3.amazonaws.com/setikizo/tubanipuvopu.pdf
    • https://uploads.strikinglycdn.com/files/0781300e-a599-4e62-9f55-b305bbaff2ea/maze_runner_the_scorch_trials_age_rating_uk.pdf
    • http://jiwodiw.myartsonline.com/academic_writing_practice_for_ielts_free_download.pdf
    • https://s3.amazonaws.com/mipeboro/bhanga_hrudaya_song_human_sagar.pdf
    • https://s3.amazonaws.com/wefemabeni/google_maps_api_key_android_debug.pdf
    • https://s3.amazonaws.com/xedewofuretujo/troy_bilt_27_ton_log_splitter_specs.pdf
    • http://fumibilulad.atwebpages.com/lulonusajisojub.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e84f.bin
d4746970aed29b6e8cd2170b331c7c744b52d188c54922c4d439485c079f97e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE84F 5480 bytes
font_01_sfnt_off0000faff.bin
3e75ef51ddeb27893509e39fd831e014ff13a5f681d5ae9462c623e5eb363277		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFF 10416 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.