Malicious PDF — malware analysis report

Static analysis result for SHA-256 60464bd37b744303…

MALICIOUS

PDF

96.5 KB Created: 2021-04-01 21:11:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f3c8989336dfbbc298105d5dc71291e1 SHA-1: 892729d5af36ff69c67d258d3678088dabd2c2a6 SHA-256: 60464bd37b7443038a81eeadb7a776a39c5fddd1111edefe1367219b4a1f0594
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary focus on directing users to external sites disguised as search results. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://gimoguvi.ru/award?keyword=ammonia+gas+sensor+pdf PDF link annotation
    • http://fidumanodabimor.22web.org/arquitectura_latinoamericana_contempornea_hugo_segawa.pdfIn PDF document text
    • http://cmbclientes.com/4110797102edv7g.pdfIn PDF document text
    • http://tuimag.ru/the_hunger_games_mockingjay_part_1_original_motion_picture_soundtrack_brainewusu.pdfIn PDF document text
    • http://kigurumi.org/la_casa_del_lago_pelicula_completa_en_espaol_latinoiqyuz.pdfIn PDF document text
    • http://bukudix.getenjoyment.net/scaricare_canzoniere_chitarra.pdfIn PDF document text
    • http://trokot-shtorki.online/descargar_padre_rico_padre_pobrei89b9.pdfIn PDF document text
    • http://iminn.ru/rosukukot9wi7.pdfIn PDF document text
    • http://tebeririz.scienceontheweb.net/84856000296.pdfIn PDF document text
    • http://vulevon.22web.org/19969496112.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zelixedamaxux.rf.gd/filesawudevelekowamabaweb.pdfIn PDF document text
    • http://tafikepuvanotu.epizy.com/beginner_piano_songs_free_sheet_music.pdfIn PDF document text
    • http://vemexomejolu.epizy.com/23030972383.pdfIn PDF document text
    • http://samepuwewar.rf.gd/advanced_english_grammar_tenses_exercises_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/333cd6cb-2f8d-428c-b1aa-5683f984ff41/how_to_set_my_citizen_eco_drive_wr200.pdfIn PDF document text
    • http://duguteterexu.epizy.com/fonakub.pdfIn PDF document text
    • http://vowukexakajan.rf.gd/christmas_folk_songs_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0c9bc43-bae7-46dc-bc4c-3403f9d8582c/amway_levels_income_2018.pdfIn PDF document text
    • http://fuwotatikiluwa.epizy.com/42853830651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/499c1d45-c481-4ea1-93b2-848a82dffc76/zoxovapatomawolutebax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d72ed188-8696-40db-a2ea-c31d369cb688/diana_palmer_wyoming_series_in_order.pdfIn PDF document text
    • http://sixosotonipo.epizy.com/pakaian_pekerjaan_beruniform.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/443ff3a2-5558-4680-a716-7f2f276bcbed/learn_how_to_write_arabic_letters.pdfIn PDF document text
    • http://faputigumajo.rf.gd/89037032399.pdfIn PDF document text
    • http://kewagar.epizy.com/safety_glasses_z87_oakley.pdfIn PDF document text
    • http://gimukukuzape.epizy.com/40870090822.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_off0001257e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1257E 5320 bytes
SHA-256: ad864b21f88a45f6f0b65e65a45b7024fa25984cbbac96080f233105afea7c48
font_01_sfnt_off00013782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13782 11524 bytes
SHA-256: f30eee5405d268a256d018b23572b490234ac962036791e34c27e17dfaafb0ab
font_02_sfnt_off00015ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EE6 16260 bytes
SHA-256: b1b93bf558ee65cf174bdde98fc70b39c77ddcfeef9d3a00758a58eb2f24951c