Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ee33e0193b21b26…

MALICIOUS

PDF

80.5 KB Created: 2021-03-08 21:12:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2298b0d7ee3bda02fa9af9da7b904ff4 SHA-1: b23fc46cbd628865dffa25ab28570e164058496a SHA-256: 5ee33e0193b21b262919edb8c5da2849073741f2ecb943ad76430c58993103ca
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan and an ML classifier indicating maliciousness. It contains numerous external URLs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content or phishing sites. The presence of embedded URLs and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/123?utm_term=greenland+ice+sheet+melt+2018 PDF link annotation
    • https://jetisinodab.weebly.com/uploads/1/3/5/3/135335938/vinivaz-sazenexit-kigow.pdfIn PDF document text
    • http://sibiwuketilivi.22web.org/78217201044.pdfIn PDF document text
    • http://nefritthebestthing.site/4899667649sdb5r.pdfIn PDF document text
    • http://idealicaitalia-official.site/p6_eppm_system_administration_guide_17itldg.pdfIn PDF document text
    • http://bubble1.space/how_to_cook_potstickers_on_stovewx6bg.pdfIn PDF document text
    • http://medebux.22web.org/what_to_say_when_there_is_a_death_in_the_family.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/74589149655kw3pg.pdfIn PDF document text
    • https://pafetujesotizi.weebly.com/uploads/1/3/5/3/135348857/gikemi-fivabomefasebes.pdfIn PDF document text
    • http://nonretloli.site/king_gizzard_and_the_lizard_wizard_torrentd6v7b.pdfIn PDF document text
    • https://sexazoterufufur.weebly.com/uploads/1/3/4/4/134486617/529cb4.pdfIn PDF document text
    • https://lekopejener.weebly.com/uploads/1/3/5/3/135323345/8e7f039e6d1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sewugobavi.rf.gd/65903097363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbaa8ca5-3ae8-40ff-a302-b223938e0778/vebopogiforogubimun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80240ea7-7d15-4057-8bbd-87c0fff01526/imusa_pressure_cooker_4.2_qt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9bd5aaa-3d4c-43b2-a099-16fe78f34bcc/nesixuwu.pdfIn PDF document text
    • http://turojupa.epizy.com/wenume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de97254b-d1e0-4b35-a808-f804980b7c7c/how_to_use_elgato_with_nintendo_switch.pdfIn PDF document text
    • http://kunijudodo.rf.gd/battlefield_bad_company_2_android_game.pdfIn PDF document text
    • http://foluxosanoxawat.rf.gd/my_online_light_is_off_on_my_modem_spectrum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a1a6f47-1018-4d86-aa5e-6ebf6f02d4c0/i_am_only_one_call_away_lyrics.pdfIn PDF document text
    • http://valogaberel.rf.gd/bacteria_cell_structure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/074c2443-4641-492f-a1f8-5aa4c46b38f8/how_to_say_hello_in_navajo.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_off0000fd63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD63 5732 bytes
SHA-256: 467419b1af422729e8ffbe22e2374fea8eb934eb3e1eabd8e9b7c8e156c2e68a
font_01_sfnt_off000110b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B4 10656 bytes
SHA-256: 880937fd82b1eedf5c5d3d05c48124e7ca2d30b750cbc58b9f7144041d42b396