Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ea109f5d88b8a8…

MALICIOUS

PDF

80.6 KB Created: 2021-03-19 04:09:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 2e48aa72fca24f5c207feca5f184f545 SHA-1: 5eae7909bc36e0ed8d07916a30b4be22ec1f00c0 SHA-256: 97ea109f5d88b8a81dad03acbf5f053390dd9fdf816b0fc2d14afdaa6863dd97
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. The document contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The presence of these links and the overall detection profile strongly indicate an attempt to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/wix?keyword=helicopter+game+hacked+unblocked PDF link annotation
    • http://razvivatel.blog/derive_the_equation_of_the_deflection_curve_for_a_cantilever_beam3udgs.pdfIn PDF document text
    • http://kijofizovurisos.medianewsonline.com/ford_mustang_mach_1_1969_price_in_pakistan.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/hdjhtgd/indoor_rock_climbing_prescott_az.pdfIn PDF document text
    • http://sepozimog.scienceontheweb.net/66537954888.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/pofogov.pdfIn PDF document text
    • http://republvinb.fun/nuxabusimutubonikobifs1ues.pdfIn PDF document text
    • http://serdyukov.pro/fakopupered8fhwq.pdfIn PDF document text
    • http://kafofal.mygamesonline.org/tanglewood_2020_season.pdfIn PDF document text
    • http://indital.space/angle_relationships_worksheet_8th_gradehck75.pdfIn PDF document text
    • http://bodipok.getenjoyment.net/i_am_not_nice_quotes.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/jemasorebuzawavobazu.pdfIn PDF document text
    • https://cdn.sqhk.co/satidaruxami/iLJhgid/bts_new_songs_2020_playlist.pdfIn PDF document text
    • https://cdn.sqhk.co/joxonorapa/hdchijb/nolonowatolipoputu.pdfIn PDF document text
    • http://rezexepenoma.scienceontheweb.net/fikazosogenofupex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tiwedozesa.atwebpages.com/cabbage_farming_in_kenya.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/554ab0ee-625d-475d-8cbf-3cb025c56349/how_to_dry_boletes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75a0c256-6338-4f36-aeca-374597b09e9c/how_to_use_a_delonghi_oil_heater.pdfIn PDF document text
    • http://segurixuzek.myartsonline.com/stein_on_writing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dacf88c-b4e8-4ae7-a64f-8544247b3297/76636913874.pdfIn PDF document text
    • http://beliraguw.onlinewebshop.net/lunesudotuvufobuzeferug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80fecd02-ce56-4d65-bcce-0338dd31fa97/vermont_castings_radiance_propane_conversion_kit.pdfIn PDF document text
    • http://naburonip.myartsonline.com/ontario_vehicle_safety_inspection_checklist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b7bb3f0-95fa-4d9f-acd6-aebd72f0108d/diablo_3_necromancer_donjon_densemble.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e88b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88B 5472 bytes
SHA-256: f3764505ba5c056eba571f523db97757f7cb50bb0aa901424b9187c1e0e33271
font_01_sfnt_off0000faf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF2 10980 bytes
SHA-256: e47da54ba244694e1703a7e6719ef8a63f0601028203749cdd104854c526865b
font_02_sfnt_off00012008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12008 16060 bytes
SHA-256: 5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330