Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ed004b44520e8e…

MALICIOUS

PDF

89.4 KB Created: 2021-04-20 11:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1360e22bbf93c2ff3f1266ffa94c33a7 SHA-1: aa986e3d51c37408c26098daca3aba67e11cb846 SHA-256: d0ed004b44520e8e66182ac7f1b2a0b2319b675e75e99f127a2f4e8078f62da4
156 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many of which are SEO-optimized and point to other PDFs, suggesting a link farm or content-spinning operation. The primary URL, 'https://kuzutuzo.ru/strik?utm_term=what+does+a+calling+bird+cost+at+petsmart', is likely part of a phishing or scam campaign designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://kuzutuzo.ru/strik?utm_term=what+does+a+calling+bird+cost+at+petsmart
    • https://cdn.sqhk.co/mesafovojifo/26hgdgg/dual_universe_beta_gameplay.pdf
    • http://pamuxixa.iblogger.org/crown_of_thorns_starfish_lifespan.pdf
    • https://cdn.sqhk.co/xumifutave/ea6Qgfm/national_d-_day_memorial_virginia.pdf
    • http://toladidiripe.iblogger.org/calculus_optimization_word_problems_worksheet.pdf
    • https://cdn.sqhk.co/jagibuvat/dibjjIQ/world_s_poultry_science_journal_abbreviation.pdf
    • https://cdn.sqhk.co/reparepoki/dGsetLg/christmas_santa_run_2019_singapore.pdf
    • http://jadivaza.iblogger.org/how_to_help_a_child_with_separation_anxiety_at_school_uk.pdf
    • https://cdn.sqhk.co/zumedizojas/higdDif/pocket_option_trading_strategies.pdf
    • https://cdn.sqhk.co/gogadibavuta/jgiHicp/las_vegas_visitor_guide.pdf
    • https://cdn.sqhk.co/pozusonitid/47MjigJ/ansible_example_template_file.pdf
    • https://cdn.sqhk.co/sativomofij/UbRGchh/escape_plan_the_extractors_cast.pdf
    • https://cdn.sqhk.co/sanevujaguda/jbgjMjj/hd_blur_background_for_editing.pdf
    • http://sizijevoji.iblogger.org/18271010956.pdf
    • http://xufotegebiv.22web.org/best_place_to_shoot_an_elephant_ear_bulbs.pdf
    • https://cdn.sqhk.co/satidaruxami/hdnjbs6/kikaxebukufow.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/sakaburepagase/riboniwezoz.pdf
    • https://uploads.strikinglycdn.com/files/bb19ba48-09f1-4986-8622-52595a715164/13532368510.pdf
    • https://dda5c79a-a75d-44d9-a006-48dec3bfe172.filesusr.com/ugd/115d6e_762d98c746ca4b4697514a59ffafba63.pdf?index=true
    • https://s3.amazonaws.com/rijaliwiguvex/what_are_the_three_main_parts_of_a_narrative_text.pdf
    • https://9b321a86-0615-40a7-b684-6dced782f4cc.filesusr.com/ugd/e3cae3_efc45a1bd82c455e9b5a012ad095f055.pdf?index=true
    • https://s3.amazonaws.com/difigomisosak/does_using_a_waterpik_help_whiten_teeth.pdf
    • https://uploads.strikinglycdn.com/files/57ce55ba-55f2-483e-a073-0273a646b0f9/coraline_full_book_online_free.pdf
    • https://s3.amazonaws.com/vebisop/game_hungry_shark_mod_apk_2019.pdf
    • https://2178e3ec-2e0a-46e0-af35-d8a6fdfeb21a.filesusr.com/ugd/c411cf_0ce9b99dc13941b4875c75e3f07c1f56.pdf?index=true
    • https://s3.amazonaws.com/lanaladu/sq8_mini_dv_camera_manuale_italiano.pdf
    • https://ba10d46a-d7c1-43af-8542-f1a50f31aa8a.filesusr.com/ugd/4dded2_b0fc76b3a38e40c5861d8a691f0bdf5a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c2311ad7-e450-4667-936c-6ea2e4544249/someone_like_you_ukulele_fingerstyle.pdf
    • https://uploads.strikinglycdn.com/files/e8a47d60-3214-4cfc-92de-fa6e50f6879f/wedivevujisimi.pdf
    • https://e05653fc-386e-4c8b-889d-738aee72c63e.filesusr.com/ugd/62421a_fef1d00ada4e458fb556e8e6eb279031.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011187.bin
148b0fe29b8b376f4b060905f831f21e2533f3efaecde2cb51dc77dc2d59abc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11187 5428 bytes
font_01_sfnt_off000123cb.bin
bdef36d1c966d343825eb52126e56438b847f89326060f82d59ab9a4bcf5cd80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123CB 11124 bytes
font_02_sfnt_off00014942.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14942 4324 bytes

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