Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba56ded44bd25bd…

MALICIOUS

PDF

72.2 KB Created: 2021-02-15 08:21:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2fe742c91de91c3d6d7e2ce41f5b4ceb SHA-1: 76710c4cdb2b2158403546a480217ad2d670a271 SHA-256: 1ba56ded44bd25bd679e8412aae0a11dd477fc14ac4d94aae4465a72072ffde3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://jottigo.ru/wix?keyword=costa+mesa+water+polo+club PDF link annotation
    • https://tewabigonin.weebly.com/uploads/1/3/4/7/134760563/tekefojovibu-mugevufagifara-lusujulekolozi.pdfIn PDF document text
    • https://cdn.sqhk.co/zajagatetode/imSVFtR/95804423353.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/Gjhehed/badavajavodujiligawup.pdfIn PDF document text
    • https://walagewujiw.weebly.com/uploads/1/3/0/9/130968979/dusopo-jerifos-delapugipel.pdfIn PDF document text
    • https://cdn.sqhk.co/mitukutowum/hdBYjil/link_samsung_health_to_fitbit_app.pdfIn PDF document text
    • https://rerararomimin.weebly.com/uploads/1/3/1/3/131383042/1948568.pdfIn PDF document text
    • https://cdn.sqhk.co/tupipitijil/xDxiehi/sdgs_in_your_pockets.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/6gigdvy/meridian_transfer_station_hazardous_waste.pdfIn PDF document text
    • https://vawuzusafut.weebly.com/uploads/1/3/4/8/134863851/5518282.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/Dhexwz0/tuzanulerologodaxewemis.pdfIn PDF document text
    • http://malafasa.iblogger.org/understanding_eclipses_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/lakekomum/KhamQih/kutegi.pdfIn PDF document text
    • https://cdn.sqhk.co/rirakibugo/fVXMic7/rear_delt_reverse_pec_deck_fly_machine.pdfIn PDF document text
    • https://cdn.sqhk.co/vemosoveveb/iWigRjj/snapped_cheez_its_commercial.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://didigenekogama.epizy.com/sajani_kannada_movie_audio_songs.pdfIn PDF document text
    • http://rubuvajaroxe.epizy.com/rixanuvepibemolagomebefu.pdfIn PDF document text
    • http://nowaginog.epizy.com/complejo_articular_del_hombro.pdfIn PDF document text
    • http://pumifaxiko.rf.gd/kuzusofazop.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_off0000de55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE55 5216 bytes
SHA-256: 436c4f36c8ea4ba34f3b05f3070a6af0d158d19b79eefa99ec188d640c1f8822
font_01_sfnt_off0000f003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF003 10344 bytes
SHA-256: 4f88091ebde6baed5dd49eb6eefe175360e0194141abcfb3bb21797ce2554646