Malicious PDF — malware analysis report

Static analysis result for SHA-256 78d0fbdeac97a867…

MALICIOUS

PDF

75.3 KB Created: 2021-03-06 20:53:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 434300dbe4844ba2d5ed41220d8d0a0a SHA-1: 5904e45af44c7020cd318e816054fecffb7b4768 SHA-256: 78d0fbdeac97a86733655659cada56d1b283b7b7e21120e68a676e00fcaa4581
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with 'baarspo.ru' and 'liketsven.xyz' being particularly suspicious. The document body, though heavily obfuscated, suggests a lure related to downloading a PDF, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/wix?keyword=half+bad+sally+green+pdf+download PDF link annotation
    • http://liketsven.xyz/crayfish_dissection_analysis_answersu1m3h.pdfIn PDF document text
    • http://mofolaz.22web.org/itunes_64_bit_for_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/jibezilesu/haMmkhd/dusixowivazubepokojimezod.pdfIn PDF document text
    • https://cdn.sqhk.co/fumediju/EmlRMhc/pitutofuwiworevop.pdfIn PDF document text
    • http://usechambre.xyz/94722553314h9t3t.pdfIn PDF document text
    • https://cdn.sqhk.co/madosodu/hh7Z6M8/73284859963.pdfIn PDF document text
    • http://espacecmb.xyz/over_the_garden_wall_art_book1v0x8.pdfIn PDF document text
    • http://opt15.ru/vba_programming_language_tutorialpk4ey.pdfIn PDF document text
    • http://copyrightshelpscenters.com/gateway_dx4860_drivers_windows_10lgou7.pdfIn PDF document text
    • http://cleaner360.shop/takupawaw6ge2c.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/gfLjdQi/metal_slug_6_ps2_cheat_codes.pdfIn PDF document text
    • http://rineset.xyz/phet_balancing_chemical_equations_simulation_answer_key4ncu4.pdfIn PDF document text
    • https://cdn.sqhk.co/lofopapenow/hijf9hf/deadliest_warrior_game_xbox_one.pdfIn PDF document text
    • http://jobauthor.online/top_free_music_apps_offline6vahp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gejujebiwibi.epizy.com/ributovujuwefogevexu.pdfIn PDF document text
    • https://5ce19dfa-329f-495d-88d1-e1e7834d9072.filesusr.com/ugd/d902bb_9071db26adcd4c53aecc9a5e425bd600.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4563b1b1-cdd7-42d3-a725-89a210eece26/i_pilot_remote_wont_turn_off.pdfIn PDF document text
    • http://melewurimepuja.rf.gd/85137061889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1b06318-8c3c-4966-8d8d-50683526e81f/fokuvab.pdfIn PDF document text
    • https://348ddb29-83e1-4812-94a1-743b72ef9b42.filesusr.com/ugd/23b571_2a2b51c0750746008d95a5fca7cf15cf.pdf?index=trueIn PDF document text
    • https://d78d2789-9aef-4bfd-88be-9093bec910ef.filesusr.com/ugd/87a178_753bc599480c4483ab87adff1ab68d78.pdf?index=trueIn PDF document text
    • https://4cd5eafb-d261-4666-a528-29b55b1676c1.filesusr.com/ugd/8dde66_37cba20d6cd6444d8289858cdd3024e9.pdf?index=trueIn PDF document text
    • https://e0fa0743-814d-41de-b6a5-47f787911882.filesusr.com/ugd/89d2ef_4bc63f8e52504455a1b45485d1da1b52.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e720f9b-f825-4be1-bd61-c67f1593224c/kentucky_fried_chicken_song_lyrics.pdfIn PDF document text
    • http://rifesos.epizy.com/barbie_games_apk_free.pdfIn PDF document text
    • http://muwusub.rf.gd/44832978803.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB51 3304 bytes
SHA-256: e9df1abf47a688c52bbf36275161d4c71dd3d5463c3e540779115c3c600865d9
font_01_sfnt_off0000e737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE737 5504 bytes
SHA-256: e5f832f635b4d278717081b73bccdfabe32f4624371fb47c87c79bc2498075bd
font_02_sfnt_off0000fa10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA10 10328 bytes
SHA-256: 0e274565b79301b5e96a6c61e34fb92a1c3a3bd9320eb5c6269e9ab02338305e